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': 'Chalazion is: \nSelect and explain. \nA. Chronic inflammation of meibomian gland, B. Acute inflammation of meibomian gland, C. Inflammation of Zeis gland, D. None', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Chronic inflammation of meibomian gland', 'role': 'assistant'}]