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
Foot drop is due to injury of: 
Select and explain. 
A. Lateral cutaneous nerve, B. Common peroneal nerve, C. sural nerve, D. none
B: Common peroneal nerve
Answer: B: Common peroneal nerve 
Explanation: B; Common peroneal nerve