Hannibal Began Snorting Cocaine About Three Years Ago

Hannibal began snorting cocaine about three years ago. He said the first high was the most astounding, exciting, mind-blowing experience he'd ever had. However, he has never been able to recapture that initial euphoria, and now he needs more and more of cocaine to get anywhere near to his first experience. Hannibal:

A) has developed a tolerance to cocaine.
B) has transferred his dependence to some other substance.
C) is showing symptoms of withdrawal.
D) is using cocaine that is of inferior quality.