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': 'Vossius ring is seen on \nSelect and explain. \nA. Cornea, B. Anterior capsule of lens, C. Posterior capsule of lens, D. Iris', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Vossius ring is the Iris pigments inprinted on the anterior capsule of the lens in shape of Pupil It is due to blunt trauma Refer: Khurana 6th edition page number 430', 'role': 'assistant'}]