You've observed the following returns on Yamauchi Corporation's stock over the past five years: -24.3 percent, 13.2 percent. 29.4 percent, 21 percent, and 21.1 percent. The average Inflation rate over this period was 3.21 percent and the average T-bill rate over the period was 4.3 percent a. What was the average real return on the stock? (Do not round Intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g.. 32.16 b. What was the average nominal risk premium on the stock? (Do not round Intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g. 32.16.) a. Average real return b. Average nominal risk premium