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
Prions are best killed by- 
Select and explain. 
A. Autoclaving at 121°C, B. 5% formaline, C. Sodium hydroxide, D. Sodium hypochloride
C: Sodium hydroxide
Answer: C: Sodium hydroxide 
Explanation: 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