When Harry died, he left his surviving wife, Clare, the following:

a. A remainder in a summer house, with a life estate left to his mother.

b. A life estate and a general power of appointment in closely held stock, which, in the last 17 years, paid no dividends.

c. An insurance policy on her own life.

d. An annuity payable from a qualified, noncontributory pension plan.

e. A patent with three years to run.

f. Income from a mutual fund for life, with a remainder to their two daughters.

Which of the above bequests qualify for the marital deduction?