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
Purpose of sterilization is to eliminate 
Select and explain. 
A. Bacteria, B. Viruses, C. Spore formers, D. Fungus
C: Spore formers
Answer: C: Spore formers 
Explanation: None