This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Surgery
[{'content': 'Relative humidity in operation theatre should be maintained at? \nSelect and explain. \nA. 35-45%, B. 45-55%, C. 55-65%, D. 65-75%', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. (c) 55-65Ref: Bailey & Love 26thed.page 248, 25thed page 210', 'role': 'assistant'}]