Which of the following choices might be appropriate as part of a diversified portfolio within a tax-advantaged account, such as an IRA, for a 67 year old desiring some return from income in the account? 1.AA rated general obligation bond issued by city of Miami, Fl. maturing in one year. 2.intermediate term government bond mutual fund 3.put selling 4.AA rated corporate bond with 20 year maturity and a survivor's put feature Select one: a. 1 only b. 2 and 3 c. 2 and 4 d. 1 and 4