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
Injury to which nerve will affect lacrimal secretion 
Select and explain. 
A. Greater petrosal nerve, B. Lesser petrosal nerve, C. Sphenopalatine nerve, D. Nasocilliary nerve
A: Greater petrosal nerve
Answer: A: Greater petrosal nerve 
Explanation: None