Stock A has a beta of 1.2 and a standard deviation of returns of 14%. Stock B has a beta of 1.8 and a standard deviation of returns of 18%. If the risk-free rate of return increases and the market risk premium remains constant, then Select one: a. the required return on stock B will increase more than the required return on stock A b. the required return on stock A will increase more than the required return on stock B c. the required returns on stocks A and B will both increase by the same amount d. the required returns on stocks A and B will not change