This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
[{'content': 'Lens derives nutrition from \nSelect and explain. \nA. Vitreous, B. Aqueous, C. Optic aery, D. Ophthalmic aery', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Lens being an avascular structure receives its nutrition from the aqueous like glucose salts, etc, by diffusion processRef: Parsons diseases of the eye; Under the heading lens', 'role': 'assistant'}]