In Which,if Any,of the Following Independent Situations Has Fred Made

In which,if any,of the following independent situations has Fred made a gift?

A) Fred established a revocable trust,income payable to himself for life and,upon his death,remainder to his children.
B) Fred dies owning a U.S.savings bond with ownership listed as: "Fred,payable to Sue on Fred's death." Sue redeems the bond.
C) Fred sends $25,000 to Alice's oral surgeon in payment of her dental implants.Alice is Fred's sister and does not qualify as his dependent.
D) Fred pays Eva $800,000 in a pre-nuptial settlement of her marital rights.One month later Fred and Eva are married.
E) None of the above.