You recently purchased a stock that is expected to earn 25 percent in a booming economy, earn 9 percent in a normal economy, and lose 15 percent in a recessionary economy. There is a 15 percent probability of a boom and a 60 percent chance of a normal economy. What is your expected rate of return on this stock? Select one: O a. 3.40 percent O b.5.40 percent c. 4.60 percent d. 3.85 percent e. -2.25 percent