A 33-Year-Old Man Has Nearly Depleted His Life Savings in the Past

A 33-year-old man has nearly depleted his life savings in the past 6 months with his cocaine addiction. Despite losing his job and the deterioration of his marriage, the man continues to use cocaine. Which of the following receptor types is most likely involved in this man's drug seeking behavior?

A) Melatonin
B) Kainate
C) Serotonin
D) Dopamine
E) Gamma-aminobutyric acid