This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Psychiatry
[{'content': 'What is the percentage of Anorexia nervosa? \nSelect and explain. \nA. 2%, B. 1%, C. 0.50%, D. 3%', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (B) 1% # Anorexia Nervosa:> Epidemiology: Among women, the lifetime prevalence of the full syndrome of AN is approximately 1%.> AN is much less common in males.> AN is more prevalent in cultures where food is plentiful and in which being thin is associated with attractiveness.> Individuals who pursue interests that place a premium on thinness, such as ballet and modeling, are at greater risk.> The incidence of AN has increased in recent decades.> Bulimia Nervosa: It occurs 1-3% (more common)', 'role': 'assistant'}]