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': 'Foot drop is due to injury of: \nSelect and explain. \nA. Lateral cutaneous nerve, B. Common peroneal nerve, C. sural nerve, D. none', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B; Common peroneal nerve', 'role': 'assistant'}]