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': 'Which of the following is the most common ocular complication with renal transplantation: \nSelect and explain. \nA. Cataract, B. Glaucoma, C. Cytomegalo virus retinitis, D. Candida keratomycosis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Cytomegalo virus retinitis', 'role': 'assistant'}]