This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Physiology
[{'content': 'Weight of 1 cc of air at normal pressure and temperature \nSelect and explain. \nA. 0.001297g, B. 0.002345g, C. 0.004g, D. 1.OOOg', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: a (0.001297g)Weight of 1 cc of air at normal temperature and pressure is 0.001297g', 'role': 'assistant'}]