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: Pathology
[{'content': 'The break up time test is performed to evaluate the function of: \nSelect and explain. \nA. Lacrimal gland, B. Submandibular gland., C. Parotid gland., D. All of the above.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The break uptime test is performed to evaluate the function of Lacrimal gland.', 'role': 'assistant'}]