4. You are comparing stock A to stock B. Given the following information, the difference between the expected retum of stock A and Stock B is _(49)__%. The difference between the variance of stock A and stock B is (50) %. If you have to invest in one stock, you should invest in (51) (choose Ah B) State of Economy Boom Bust Rate of return if state occurs Probability of Stock A Stock B State of Economy 10.7 0.155 0.095 0.3 -0.1 0,04