Need help with Finance Question, read it carefully and check your answer please. Thank you.

Consider the following variance-covariance matrix for Security A, Security B, and the Market: For the coming year, the Market Risk Premium is 5.5 percent and the risk-free rate is 2.0 percent. Determine the required return for Security A using both the Capital Market Line and the Security Market Line (CAPM) What is the (absolute) difference between these two fequired return: ? 7.700% 12.375% 10.875% 20.65%