Based on the economic scenarios shown below, what is the standard deviation of the stocks expected return?

Scenario	Probability	Return
Boom	25%	30%
Normal	50%	10%
Recession	25%	-20%

Question 8 options:

A)

17.9%

B)

19.6%

C)

15.7%

D)

16.2%

E)

14.7%