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': 'Macula involvement is common in: \nSelect and explain. \nA. Toxoplasma, B. Malaria, C. CMV, D. Syphilis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. CMV', 'role': 'assistant'}]