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: Surgery
[{'content': 'Phytobezoars are composed of \nSelect and explain. \nA. Hair, B. Vegetable Matter, C. Undigested food, D. Desquamated epithelial cells', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Vegetable MatterPhytobezoars are composed of vegetable matter and, are usually seen in association with gastroparesis or gastric outlet obstruction.', 'role': 'assistant'}]