This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Peripheral nerve injuries, Subject name: Anatomy
Claw hand is caused by lesion of 
Select and explain. 
A. Ulnar nerve, B. Median nerve, C. Axillary nerve, D. Radial nerve
A: Ulnar nerve
Answer: A: Ulnar nerve 
Explanation: A greate than B Claw hand of 3rd bad 4th finger will be seen in isolated ulnar palsy as 1st ND 2nd fingers lumbricals are spared -----ulnar claw hand Claw hand of all fingers is seen in combined ulnar and median nerve palsy as all lumbricals and Interoosei are paralyzed -----true claw hand Refer ebnezar 4th/e p 336