This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nerve supply, Nerve Lesions, Subject name: Anatomy
[{'content': "FROMENT'S SIGN is due to which nerve injury? \nSelect and explain. \nA. Intercostobrachial nerve, B. Radial nerve, C. Ulnar nerve, D. Median nerve", 'role': 'user'}, {'content': "Answer: C \nExplanation: FROMENT'S SIGN/BOOK TEST: - Tests Adductor pollicis muscle - It is innervated by ULNAR NERVE - In ulnar nerve injury, when the patient is asked to grasp a book firmly b/w thumb & other fingers of both the hands, Terminal phalanx of thumb on paralysed side becomes flexed at interphalangeal joint", 'role': 'assistant'}]