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
[{'content': 'Schirmer-I test measures: \nSelect and explain. \nA. Total tear secretions, B. Basal tear secretions, C. Reflex tear secretions, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. Total tear secretions', 'role': 'assistant'}]