Prozac (fluoxetine hydrochloride), a product of Eli Lilly and Company, is used for the treatment of depression, obsessive-compulsive disorder (OCD), and bulimia nervosa. An issue of the magazine Arthritis Today contained an advertisement reporting on the "... treatmentemergent adverse events that occurred in $2 \%$ or more patients treated with Prozac and with incidence greater than placebo in the treatment of depression, OCD, or bulimia". In the study, $2444 \mathrm{pa}$ tients took Prozac and 1331 patients were given placebo. Identify the
a. treatment group.
b. control group.
c. treatments.