Find all statement(s) that is(are) correct: a. Under expectation hypothesis, if you buy a 5 year risk-free zero-coupon bond, and hold it only for 3 years, you can expect to earn today's 3-year zero rate, z03, per annum over the three years. b. If you buy a 5 year risk-free zero-coupon bond, and hold it only for 3 years, you are guaranteed to earn today's 3-year zero rate, z03, per annum over the three years. c. Under expectation hypothesis, investors prefer stock A (expected return =15%, standard deviation =20% ) to stock B (expected return =13%, standard deviation =12% )