the treasury bill rate is 6%, and the expected return on the market portfolio is 14%. according to the capital asset pricing model: a. what is the risk premium on the market? b. what is the required return on an investment with a beta of 1.4? (do not round intermediate calculations. enter your answer as a percent rounded to 1 decimal place.) c. if an investment with a beta of 0.6 offers an expected return of 8.4%, does it have a positive or negative npv? d. if the market expects a return of 11.6% from stock x, what is its beta? (do not round intermediate calculations. round your answer to 2 decimal places.)