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
Shirmer's test is done for 
Select and explain. 
A. Occulomotor nerve, B. Optic nerve, C. Facial nerve, D. Hypoglossal nerve
C: Facial nerve
Answer: C: Facial nerve 
Explanation: Answer is C (Facial nerve): Shirmer's test is done to assess the lacrimation function of the Facial Nerve (Greater Superficial Petrosal Nerve).