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': 'The capsule of the crystalline lens is thinnest at \nSelect and explain. \nA. Anterior pole, B. Posterior pole, C. Equator, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (Posterior pole) (167- Khurana 4th)Lens Capsule - is a thin, transparent, hyaline membrane surrounding the lens* Capsule is thickest at pre-equator regions (14 p) and thinnest at the posterior pole Op)', 'role': 'assistant'}]