The Focus on Neuroscience Box "Comparing Psychotherapy and Antidepressant Medication

The Focus on Neuroscience box "Comparing Psychotherapy and Antidepressant Medication" features a research study involving positron emission tomography (PET) scans that compared brain activity in two groups of individuals with depressive symptoms. One group underwent 12 weeks of treatment with interpersonal therapy, and the other group underwent 12 weeks of treatment with the antidepressant medication Paxil. PET scans taken after 12 weeks of treatment showed that:

A) brain activity changed to more normal levels in both groups.
B) brain activity did not change in the group treated with Paxil, but it did change in the group treated with interpersonal therapy.
C) brain activity did not change in the group treated with interpersonal therapy, but it did change in the group treated with Paxil.
D) brain activity did not change in either group.