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: Medicine
[{'content': "Shirmer's test is done for \nSelect and explain. \nA. Occulomotor nerve, B. Optic nerve, C. Facial nerve, D. Hypoglossal nerve", 'role': 'user'}, {'content': "Answer: C \nExplanation: Answer is C (Facial nerve): Shirmer's test is done to assess the lacrimation function of the Facial Nerve (Greater Superficial Petrosal Nerve).", 'role': 'assistant'}]