Sure! Let's break down the question: ## What is CAPM? **CAPM (Capital Asset Model)** is a finance theory that describes the relationship between the expected return of an investment and its risk, specifically the **systematic risk** (market risk). ### CAPM Formula \[ \text{Expected Return} = R_f + \beta (R_m - R_f) \] - \( R_f \): Risk-free rate - \( \beta \): Beta (measure of systematic risk) - \( R_m \): Expected market return ## Explanation of Options - **A. Its total risk:** ❌ *Total risk* includes both systematic (market-related) and unsystematic (company-specific) risk. CAPM only considers systematic risk. - **B. Its beta:** ✔️ *Beta* measures how much the stock moves in relation to the market. According to CAPM, a stock’s expected return depends on its beta. - **C. Its dividend payout ratio:** ❌ The dividend payout ratio is not part of the CAPM formula. - **D. Its accounting earnings:** ❌ Accounting earnings do not determine the expected return in CAPM. --- ## **Correct Answer:** **B. Its beta** **Summary:** According to CAPM, the expected return of a stock depends only on its **beta**, which measures its sensitivity to market movements (systematic risk). Factors like total risk, dividend payout ratio, or accounting earnings do **not** determine expected return in CAPM.

# Understanding Image Quality Terms When discussing cameras and image quality, several key terms are often mentioned. Let's clarify what each term means and how they relate to image detail and file size. ## Key Terms ### 1. **Megapixel** - **Definition:** A unit of measure for image resolution. One megapixel equals one million pixels. - **Impact on Detail:** Higher megapixels capture more detail in an image, allowing for larger prints without losing quality. - **Impact on File Size:** Images with more megapixels result in larger file sizes due to the increased amount of data. ### 2. **Gigabit** - **Definition:** A unit of data equal to 1 billion bits. Often used to describe data transfer rates. - **Impact on Detail:** Not directly related to image quality but relevant for data transfer speeds and storage capacity. ### 3. **Gigahertz** - **Definition:** A unit of frequency equal to one billion hertz, commonly used to measure processor speeds in computers. - **Impact on Detail:** Not related to image quality; more relevant for performance in processing images rather than the quality of the images themselves. ### 4. **Contrast Ratio** - **Definition:** The ratio of the luminance of the brightest color (white) to that of the darkest color (black) that a display can produce. - **Impact on Detail:** A higher contrast ratio can enhance the perception of detail in an image, but it does not affect the file size directly. ## Conclusion The correct answer in the context of capturing more detail while considering file size is **megapixel**. Cameras with higher megapixels can capture more detail but will produce larger image files. Other terms like gigabit, gigahertz, and contrast ratio are related to data management and display quality rather than directly influencing the detail captured in an image.