This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sleep Disorders, Subject name: Psychiatry
Which of the following conditions is characterized by episodes of excessive and uncontrolled eating: 
Select and explain. 
A. Anorexia nervosa, B. Bulimia nervosa, C. Body dysmorphophobia, D. All of the above
B: Bulimia nervosa
Answer: B: Bulimia nervosa 
Explanation: B ref: Ahuja, 4th/e p. 136-137 and 5th/ep. 151