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': 'Compression of a nerve within the carpal tunnel products inability to: \nSelect and explain. \nA. Abduct the thumb, B. Adduct the thumb, C. Flex the distal phalanx of the thumb, D. Oppose the thumb', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Oppose the thumb', 'role': 'assistant'}]