Final answer:
Using the CAPM formula, the expected rate of return for Ricci Co.'s stock is calculated to be 37.80%, corresponding to option B.
Step-by-step explanation:
The expected return on Ricci Co.'s stock can be calculated using the Capital Asset Pricing Model (CAPM), which is expressed as:
Expected Return = Risk-Free Rate + Beta * (Market Return - Risk-Free Rate)
By plugging in the values given:
Expected Return = 9% + 3.2 * (18% - 9%)
Expected Return = 9% + 3.2 * 9%
Expected Return = 9% + 28.8%
Expected Return = 37.8%
Therefore, the expected rate of return on Ricci Co.'s stock for investors is 37.80%, which corresponds to option B.