Three Chronic Marijuana Users-A "Light" User, a "Moderate" User, and a "Heavy

Multiple Choice

Three chronic marijuana users-a "light" user, a "moderate" user, and a "heavy" user-stop using marijuana. Before quitting, all three experienced abnormal blood flow in their brains. Several weeks later, blood flow in their brains had MOST likely:

A) returned to normal flow levels for all three.
B) returned to normal flow levels for the "light" and "moderate" users only.
C) returned close to normal for the "light" and "moderate" users only but still remained at abnormal levels for the "heavy" user.
D) returned closer to normal for all three.