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': 'Sterilising/disinfecting agents include all, except: \nSelect and explain. \nA. Dry heat, B. Ethylene oxide, C. Ether, D. Alcohol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Sterilization is the process by which an article, surface or medium is freed of all living microorganisms either in vegetative or spore state.\nSterilization agents are :\n\nHeat\nFiltration\nIonizing\xa0radiations\nGases (ethylene oxide, formaldehyde gas)\nSterilant liquids\n\nDisinfection means destruction or removal of all pathogenic organism, which are capable of producing the infection. Disinfecting agents are:\n\nAlcohols (ethyl and isopropyl alcohol)\nDyes\nHalogens (Iodine, chlorine)\nPhenol derivatives (Hexachlorophene, Lysol, cresol)\nBiguanides (Chlorhexidine)\nOxidising agents (KMnO4, H2O2)\nQuarternary ammonium compounds (cetrimide)\nSoaps\nAcids\nAldehydes\nMetallic salts\n\n– Ether is used as anesthetic agent, not as disinfectant or sterilizing agent.', 'role': 'assistant'}]