This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb, Subject name: Anatomy
[{'content': "'Carpal tunnel syndrome' is caused by compression of \nSelect and explain. \nA. Median nerve, B. Medial cord of brachial plexus, C. Radial nerve, D. Ulnar nerve", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Compression of median nerve causes motor,sensory,vasomotor and trophic symptoms in hand. Examination reveals wasting of thenar eminence, hypoaesthesia to light touch on the palmar aspect of lateral 3 1/2 digits. B D Chaurasia 7th edition Page no : 130', 'role': 'assistant'}]