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
[{'content': 'Claw hand is caused by lesion of \nSelect and explain. \nA. Ulnar nerve, B. Median nerve, C. Axillary nerve, D. Radial nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 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', 'role': 'assistant'}]