A stock is expected to return 15% in an economic boom, 10% in a normal economy, and -5% in a recessionary economy. Which one of the following will increase the overall expected rate of return on this stock?

A) An increase in the probability of a recession occurring

B) A decrease in the probability of an economic boom

C) An increase in the probability of an economic boom

D) A decrease in the rate of return in a recessionary economy