In Contemplation of Death During Risky Surgery, Donnelly, a Guitarist

In contemplation of death during risky surgery, Donnelly, a guitarist, gives his guitars to Cathy. The surgery is successful, and Donnelly does not die. The gift of the guitars is

A) not revoked because it was a gift causa mortis.
B) not revoked because it was a gift inter vivos.
C) revoked because Donnelly survived.
D) revoked because it was a gift inter vivos.