show me the answer please not in the exel

Consider the following probability distribution for stocks A and B: State Probability Return on Stock A Return on Stock B 1 0.10 10. 80 2 0.20 13% 7 3 0.20 12 6. 4 0.30 14 9 5 0.20 15% 8. 4. The standard deviations of stocks A and B are and respectively. A. 1.5%; 1.9% B. 2.5%; 1.1% C.3.2%; 2.0% D. 1.5%; 1.1%