would expect to happen to the value of his retirement fund if the following were to occur: a. The value of the market portfolio rises by 9 percent. b. The value of the market portfolio drops by 9 percent. c. Is your father's retirement portfolio more or less risky than the market portfolio? Explain. a. If the value of the market portfolio rises by 9%, then the value of your father's retirement fund should by %. (Select from the drop-down menu and round the answer to two decimal places.)