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': 'Prions are best killed by- \nSelect and explain. \nA. Autoclaving at 121°C, B. 5% formaline, C. Sodium hydroxide, D. Sodium hypochloride', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Prions are sterilized by: 0.5% Hypochlorite for 2 hr or 1N NaOH for 1 hour or Autoclave for 134°C for 1–1.5 hour', 'role': 'assistant'}]