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: Microbiology
[{'content': 'Which of the following provides best guarantee for sterilization in the heat sterilizer? \nSelect and explain. \nA. Using chemical indicator strip or pouch, B. Recording a temperature/pressure readings from sterilizer gauge, C. Using a bacterial spore test, D. Determining the ability of a sterilizer to kill the hepatitis B virus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]