This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: general microbiology, Subject name: Microbiology
Spores are disinfected by - 
Select and explain. 
A. Ethylene oxide, B. Betapropiolactone, C. Formaldehyde, D. Hexachlorophen
C: Formaldehyde
Answer: C: Formaldehyde 
Explanation: Ananthanarayan & Panicker's Textbook of Microbiology 9th edition pg no:34 Formaldehyde is active against the amino group in a protein molecule. In aqueous solution, it is markedly bactericidal and sporicidal and also has a lethal effect on viruses