The Main Difference Between Methylphenidate (Ritalin), When Taken as a Medication

Multiple Choice

The main difference between methylphenidate (Ritalin) , when taken as a medication for attention deficit disorder, and cocaine, when taken as a drug of abuse, is that methylphenidate:

A) inhibits receptors that cocaine excites.
B) produces the same effects more slowly.
C) attaches to a different set of receptors.
D) increases metabolic rate whereas cocaine decreases it.