Brady Is Trying Very Hard to Quit Smoking, but His

Brady is trying very hard to quit smoking, but his girlfriend, Janis, still smokes, often while they are together in their car. Just the smell of Janis's cigarette makes him crave a cigarette. What should he do?

A) End his relationship with Janis.
B) Avoid seeing Janis until she quits smoking as well.
C) Avoid situations where Janis will light a cigarette to avoid conditioned stimuli.
D) Try again later to quit smoking, when he and Janis are no longer spending so much time together.