(c) Two investment advisers are comparing the performance of their portfolios. The portfolio of the first investment adviser had a rate of return of 19% while the portfolio of the second adviser had a rate of return of 16%. The beta of the first investment adviser's portfolio was 1.5 while the beta of the second adviser's portfolio was 1. From this information alone, can you tell which investor was a better selector of individual stocks? Explain your answer. Now suppose the T-bill rate was 6% and the market return during the period was 14%. Calculate the a's of each portfolio to show which investor was a better selector of individual stocks. (10 marks)