Someone Who Normally Drinks a Substantial Amount of Alcohol Shows

Someone who normally drinks a substantial amount of alcohol shows up at the local drug treatment center complaining of nausea, sweats, shakes, and other physical symptoms. He comments that he has not had a drink of alcohol for quite some time. From this description, it would appear that he

A) has developed tolerance for alcohol.
B) suffers from psychological dependence on alcohol.
C) has a craving for alcohol.
D) has become addicted to alcohol.