Sybil Is a Teenager Who Weighs 100 Pounds and Has

Sybil is a teenager who weighs 100 pounds and has an intense fear of gaining weight, even though girls her age and height should weigh around 110 pounds. She diets and exercises frequently, and has purged after eating by using laxatives. She has not menstruated in the past three months. Sybil is likely suffering from:

A) Anorexia nervosa, restricting type
B) Anorexia nervosa, binging-purging type
C) Bulimia nervosa, purging type
D) A diagnosis cannot be made because the criteria have not been satisfied