| State | Probability | A Return | B Return | 
| Boom | .20 | 18% | -7% | 
| Normal | .50 | 10% | 6% | 
| Bust | .30 | 5% | 12% | 
Besides, Stock A has a beta of 0.8 and stock B has a beta of 1.7
A. What are the expected rates of return for stocks A and B?
B. What are the standard deviations for A and B
C. What are the coefficients of variation for A and B? Which stock is more risky? Why?
D. If you equally invest your money in A and B to form a portfolio, what would be your portfolio's expected rate of return? What would be your portfolio's beta?