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: Ophthalmology
Epiphora in a patient with seventh nerve palsy is most likely due to: 
Select and explain. 
A. Eversion of lower punctum, B. Lateral lower lid ectropion, C. Failure of lacrimal pump system, D. All of the above
C: Failure of lacrimal pump system
Answer: C: Failure of lacrimal pump system 
Explanation: Ans. Failure of lacrimal pump system