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': 'Sporicidal disinfectant is all of the following, except: \nSelect and explain. \nA. Glutaraldehyde, B. Formaldehyde, C. Ethylene oxide, D. Benzalkonium chloride', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sporicidal agents are :\nE – Ethylene oxide\xa0 F – Formaldehyde\xa0 G – Glutaraldehyde\nH – Halogens (moderate action on spores)\n\nBenzalkonium chloride is Quaternary ammonium (cationic) antiseptic which are not sporicidal.\n\nKDT 6/e, p 860\n\nPhenol and Hexachlorophene are poor sporicidal.', 'role': 'assistant'}]