If the expected return is above the required return on an asset, rational investors will do which of the following? on Select one O a Sell the asset, which will drive the price up and cause the expected return to drop O b. Sell the asset, which will drive the price down and cause the expected return to reach the required return O Buy the asset, since price is expected to increase O d. Buy the asset, which will drive the price up and cause expected return to reach the required retum