Your portfolio consists of $47,901 invested in a stock that has a beta =1.2, $88,551 invested in a stock that has a beta =1.3, and $41,909 invested in a stock that has a beta =0.5. The risk-free rate is 1.3%. Last year this portfolio had a required return of 9.3%. This year nothing has changed except that the market risk premium has increased by 5.7%. What is the portfolio's current required rate of return? 16.49%14.49%17.49%13.49%15.49%