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
[{'content': 'Spores are disinfected by - \nSelect and explain. \nA. Ethylene oxide, B. Betapropiolactone, C. Formaldehyde, D. Hexachlorophen', 'role': 'user'}, {'content': "Answer: C \nExplanation: 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", 'role': 'assistant'}]