Suppose that the Treasury bill rate is 6% rather than 3%, as we assumed in Table 121 but that the expected return on the market is still 10%. Use the betas in that table to answer the following questions a. Calculate the expected return from Pfizer. (Do not round intermediate calculations. Enter your answer as a percent rounded to 1 decimal place.) Expected return . b. What is the highest expected return offered by one of these stocks? (Do not round intermediate calculations. Enter your answer as a percent rounded to 1 decimal place.) Expected return c. What is the lowest expected return offered by one of these stocks? (Do not round intermediate calculations. Enter your answer as a percent rounded to 1 decimal place Expected return