In PET-Scan Studies,discussed in Your Textbook,of People with Obsessive-Compulsive Disorder,among

In PET-scan studies,discussed in your textbook,of people with obsessive-compulsive disorder,among those who were taking the SSRI Prozac,the metabolism of glucose in a critical part of the brain decreased,suggesting that the drug was having a beneficial effect by calming that area.What can be concluded from this result?

A) Only biological treatments can successfully treat OCD.
B) SSRIs are not an effective treatment for OCD.
C) The placebo effect must account for most of SSRIs' success.
D) SSRIs might be an effective treatment for OCD,but this does not mean that nonbiological treatments cannot have a similar effect on brain function.