What are warning signs that a person may be suffering from anorexia nervosa? (3 points)

A. Eating large amounts of food in a short time, purging, and tooth decay
B. Eating when not hungry, eating alone, or feeling guilt about food
C. Excessive use of laxatives or diet pills and frequent trips to the restroom
D. Extreme weight loss, over-exercising, and obsessing over food consumed