This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Special Senses: Vision and its Elements, Subject name: Physiology
[{'content': 'The optical power of the eye is \nSelect and explain. \nA. 25 Dioptres, B. 50 Dioptres, C. 60 Dioptres, D. 75 Dioptres', 'role': 'user'}, {'content': 'Answer: C \nExplanation: (C) 60 Dioptres > The human eye has a refractive power of approximately 60 diopters at rest.', 'role': 'assistant'}]