This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Visible range of electromagnetic spectrum of human eye \nSelect and explain. \nA. 370 - 740 nm, B. 740- 1140 nm, C. 200 - 370 nm, D. 200 - 370 nm', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Electromagnetic radiation of wavelengths approx. 400nm to 700nm, elicits a retinal response in human eye.', 'role': 'assistant'}]