According to the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV), which of the following is (are) characteristic of bulimia?
a. recurrent episodes of binge eating in a discrete period of time
b. a minimum average of four binge-eating episodes a week for at least six months
c. a feeling of lack of control over eating behavior during eating binges
d. a and c
e. a and b
Answer: d