When Clay's Father Was Diagnosed with Lung Cancer, Clay Decided

When Clay's father was diagnosed with lung cancer, Clay decided to quit smoking. Despite throwing out his cigarette packs and lighters, joining a smoking-cessation support group, and saving the money he might otherwise have spent on cigarettes helped for a while, Clay is still smoking cigarettes he bums from friends. His friends tease him, and he tells himself he's weak and probably won't ever be able to resist the temptation of cigarettes completely. Finally he just buys several packs and resigns himself to being a smoker for the rest of his life. Clay has experienced the

A) first stage in the general adaptation syndrome.
B) gate control effect.
C) abstinence violation effect.
D) stress-induced retroactive interference.
E) ironic processes effect.