8-5: Using the equation for the capital asset pricing model, calculate the following: (A) Find beta when required return is 8.5%, risk-free rate is 5.5%, and market return is 7%. (B) Find risk-free rate of return when the required return is 10%, beta is 1.3, and market return is 8%. (C) Find market return when required return is 11%, beta is 0.90, and risk-free rate of return is 3.5%. (D) Find the required return when the market return is 9.7%, beta is 1.15, and risk-free rate of return is 5%.