24- What is the standard deviation on a portfolio that is invested 30% in stock A and 70% in stock B, given the following information?

Economic State Probability of State Return on Stock A Return on Stock B

Normal 80% 8% 6%

Boom 20% 15% 7%

A) 1.12%

B) 2.28%

C) 4.60%

D) 6.60%

E) 7.16%