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: Anatomy
[{'content': 'The branch of facial nerve that conveys the secretomotor impulse involved in lacrimation is: \nSelect and explain. \nA. Chorda tympani nerve, B. Deep petrosal nerve, C. Greater petrosal nerve, D. Lesser petrosal nerve', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]