Which, if any, of the following items characterizes the election to defer Federal estate tax payments relative to an interest in a closely held business? a. In satisfying the more-than-35% test for qualification, all interests in closely held businesses can be aggregated. b. No estate tax due need be paid for the first 5 years. c. The 2% rate of interest applies to the total amount of estate tax value. d. No interest needs to be paid for the first 5 years