Cindy Is 5 ' 6" Tall and Weighs 92 Pounds

Cindy is 5 ' 6" tall and weighs 92 pounds. She is very concerned about her weight. However, at times she finds herself eating large amounts of food - several boxes of cookies, gallons of ice cream, entire cakes - all in an evening. Afterwards, she makes herself throw up. Cindy's most likely diagnosis is

A) bulimia nervosa, purging type.
B) anorexia nervosa, binge-eating/purging type.
C) anorexia nervosa, restricting type.
D) no disorder.