This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Infection, Subject name: Medicine
[{'content': 'How long will IVeponema pallidum survive in blood stored under oridanry refrigeration? \nSelect and explain. \nA. Few hours, B. 1 week, C. 3 days, D. Several years', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Treponema pallidum does not survive refrigeration for more than three days. Ref Harrison20th edition pg 1079', 'role': 'assistant'}]