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': 'Stress fracture not involves: \nSelect and explain. \nA. Metatarsals, B. Metacarpals, C. Tibia, D. Calcanium', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B ie. Metacarpals', 'role': 'assistant'}]