Pat Takes a Prescription Medication in Order to Reduce Pain,and

Multiple Choice

Pat takes a prescription medication in order to reduce pain,and Kelly takes the same medication in order to experience a "drug high." What is the difference between Pat's and Kelly's behaviour

A)  Pat is positively reinforced, but Kelly is negatively reinforced. 
B)  Pat gets negative reinforcement, but Kelly gets positive reinforcement. 
C)  Pat is avoiding negative punishment, but Kelly is avoiding positive punishment. 
D)  Pat experiences punishment, but Kelly experiences reinforcement.