Youve observed the following returns on Bennington Corporations stock over the past five years: 15 percent, 15 percent, 17 percent, 27 percent, and 10 percent. suppose the average inflation rate over over this period was 1.6 percent and the average T.bill rate over the period was 4.1 percent. a) what was the average real return on the company's stock. b) what was the average nominal risk premium on the company's stock.