Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions
Scenario I
Tyler is physically dependent on heroin and uses it intravenously multiple times per day.Most often,he uses with his dealer in a drug house on his street.One day when his dealer was out of town,Tyler met a group of fellow users going to a drug party about 2 hours away.Tyler tagged along,and noted that he felt odd injecting the drug in this setting,because the new people and environment was a marked departure from his usual routine.Minutes later,although the drug was of the same quality and he took no more or less than he usually did,Tyler overdosed and had to be rushed to the emergency room.
-(Scenario I) According to a classical conditioning account of drug overdose,because Tyler always used in the same location with the same person,the presence of those cues resulted in a(n) :

A) increased tolerance to heroin.
B) increase in the reinforcing properties of heroin.
C) increased sensitivity to the depressant effects of heroin.
D) decreased expectancy of heroin.