Suppose stock returns can be explained by the following three-factor model Assume there is no firm-specific risk. The information for each stock is presented here B2 60 1.20 27 B3 35 Stock A1.60 Stock B Stock C 80 80 1.38 The risk premiums for the factors are 6.8 percent, 6 percent, and 6.4 percent, respectively. You create a portfolio with 30 percent invested in Stock A, 30 percent invested in Stock B, and the remainder in Stock C. What is the expression for the return on your portfolio? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) Factor Beta Factor F1 Factor F2 Factor F3 If the risk-free rate is 3.9 percent, what is the expected return on your portfolio? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g 32.16.) Expected return