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
Which is the nerve involved in case of ape thumb deformity ? 
Select and explain. 
A. Median, B. Radial, C. Ulnar, D. Axillary
A: Median
Answer: A: Median 
Explanation: Ans. is 'a' i.e., Median