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': 'The gene known to be associated with Cataract \nSelect and explain. \nA. PAX6, B. FKHL7, C. CRYA4, D. CYP1B1', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The gene known to be associated with Cataract is CRYA4.', 'role': 'assistant'}]