Your portfolio consists of $36,304 invested in a stock that has a beta =1.8, $58,240 invested in a stock that has a beta =1.7, and $77,826 invested in a stock that has a beta =2. The risk-free rate is 4.7%. Last year this portfolio had a required return of 9.2%. This year nothing has changed except that the market risk premium has increased by 3.3%. What is the portfolio's current required rate of return? 15.33%14.33%16.33%17.33%18.33%