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': 'One intern calculated the concentration of 02 in blood as 0.0025 ml/m1 of blood. Considering atmospheric pressure as 760mmHg, how much approx. 02 tension could have been in the blood ? \nSelect and explain. \nA. 40mmHg, B. 60mmHg, C. 80mmHg, D. 100mmHg', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. 80 mm Hg', 'role': 'assistant'}]