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': 'Ulnar nerve injury results in: March 2012 \nSelect and explain. \nA. Ape thumb deformity, B. Wrist drop, C. Clawing of fingers, D. Pointing index', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: C i.e. Clawing of fingers', 'role': 'assistant'}]