If the economy booms, Meyer&Co. stock will have a return of 23.4 percent. If the economy goes into a recession, the stock will have a loss of 11.9 percent. The probability of a boom is 67 percent while the probability of a recession is 33 percent. What is the standard deviation of the returns on the stock?

• 16.03%

• 16.60%

• 9.74%

• 14.89%

• 13.65%