This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lenses, Subject name: Ophthalmology
[{'content': 'Lens capsule is thinnest at \nSelect and explain. \nA. Anterior pole, B. Posterior Pole, C. Laterally, D. Equator', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Lens capsule is thinnest at posterior pole. Lens capsule is a thin, transparent, hyaline membrane surrounding the lens which is thicker over the anterior than the posterior surface. Lens capsule is thickest at pre equator region and thinnest at the postrior pole.', 'role': 'assistant'}]