Question: Assume that both portfolios A and B are well diversified, that E(rA) = 24%, and E(rB) = 19%. If the economy has only one factor, and ßA = 1.7, whereas ßB = 1.3, what must be the risk-free rate? (Do not round intermediate calculations. Omit the "%" sign in your response.) The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.