Two investment advisers are comparing performance. One averaged a 19% rate of return and the other a 16% rate ofretum. However, the beta of the first investor was 1.5, whereas that of the second was 1. 20 Can you tell which investor was a better selector of individual stocks (aside from the issue of general movements in the market)? If the T-bill rate were 6% and the market return during the period were 14%, which investor would be the superior stock selector? What if the T-bill rate were 3% and the market return were 15%? a. b C