25. Over a sample period, an investor gathers the following data about four mutual funds. Mutual Risk-Free Rate Portfolio Return Portfolio Standard fund Deviation P 5% 13% 18% Q 5% 15% 20% R 5% 17% 22% s 5% 19% 24% Based solely on the Sharpe measure, an investor would prefer mutual fund: A. P. B. 0. C. R. D. S