This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General physiology, Subject name: Physiology
[{'content': 'Knee joint pain in a deep-sea diver is due to \nSelect and explain. \nA. Increased O2, B. Increased CO2, C. Increased N2O, D. Increased N2', 'role': 'user'}, {'content': 'Answer: D \nExplanation: It is due to decompression sickness In case of deep sea divers ,the nitrogen gets conveed to liquid form due to high pressure When the diver comes out of the water suddenly, the nitrogen in liquid form suddenly conves into gas,producing nerve compresses etc Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:382,383,384', 'role': 'assistant'}]