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: Anatomy
[{'content': "Median nerve injury at the wrist causes- \nSelect and explain. \nA. Claw hand, B. Loss of opposition of thumb, C. Policeman's tip deformity, D. Saturday night palsy", 'role': 'user'}, {'content': 'Answer: B \nExplanation: In median nerve injury at wrist, low median nerve injury is what occurs. That means only the thenar muscles are affected. The features shown in this condition includes- pen test for abductor pollicis brevis paralysis, opposition and abduction of thumb is lost, ape thumb deformity may be shown and loss of sensation of lateral 2/3rd of palm and lateral three and half fingers may be seen.', 'role': 'assistant'}]