Kate Constantly Thinks About Jumping in Front of an Oncoming

Kate constantly thinks about jumping in front of an oncoming car when she is walking.The only way she seems to be able to stop these self-destructive thoughts is to say Mother Goose nursery rhymes over and over to herself.In this case, Kate's symptoms are most consistent with

A) generalised anxiety disorder.
B) panic disorder.
C) bipolar disorder.
D) obsessive-compulsive disorder.