This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
[{'content': 'Mittendorf dots may be associated with \nSelect and explain. \nA. A, B. B, C. C, D. D', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) AMittendorf dots are remnants of tunica vasculosa lentis at its anterior end i.e. the posterior end of the lens - thus causing posterior polar cataract.', 'role': 'assistant'}]