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': 'Injury to which nerve will affect lacrimal secretion \nSelect and explain. \nA. Greater petrosal nerve, B. Lesser petrosal nerve, C. Sphenopalatine nerve, D. Nasocilliary nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]