Stock A has a beta of 1.2 and a standard deviation of returns of 18%. Stock B has a beta of 1.8 and a standard deviation of returns of 18%. If the market risk premium increases, then Select one: a. the required return on stock A will increase more than the required return on stock B b. the required returns on stocks A and B will remain the same c. the required return on stock B will increase more than the required return on stock A d. the required returns on stocks A and B will both increase by the same amount