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': "Froments's sign is seen in which nerve palsy \nSelect and explain. \nA. Ulnar nerve palsy, B. Median nerve palsy, C. Anterior interosseous nerve palsy, D. Radial nerve palsy", 'role': 'user'}, {'content': "Answer: B \nExplanation: FROMENT'S SIGN: This sign can be observed in Carpal tunnel syndrome. CARPAL TUNNEL SYNDROME: Compression of median nerve at wrist has become 1)common entity 2)consists of motor, sensory, vasomotor and trophic symptoms in the hand. TEST: Patient cannot hold book in his hand. REF: BD Chaurasia 7th edition Page no: 130.", 'role': 'assistant'}]