Stock A has an expected return of 13 percent and a 25 percent volatility. Stock B has an expected return of 9 percent and a 30 percent volatility. An investor can only purchase one of the two stocks. a. The investor bought stock A. What is her attitude toward risk? b. The investor bought stock B. What is his attitude toward risk? c. What is the expected return on stock B that would make a risk-neutral investor buy it? d. What is the volatility of stock B that would make a risk-averse investor buy it?