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: Medicine
[{'content': 'Daily temperature variation in remmitent fever is \nSelect and explain. \nA. < 0.5 C, B. >1.0 C, C. <1.0 C, D. >2 C', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]