This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Psychiatry
[{'content': 'Appetite for nonnutritive substances is called ? \nSelect and explain. \nA. Pica, B. Apprepritant, C. Bulimia, D. Bolean', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. PicaPica is characterized by an appetite for substances that are largely non-nutritive, such as paper, clay, metal, chalk, soil, glass, or sand.', 'role': 'assistant'}]