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
Appetite for nonnutritive substances is called ? 
Select and explain. 
A. Pica, B. Apprepritant, C. Bulimia, D. Bolean
A: Pica
Answer: A: Pica 
Explanation: 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.