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': 'Endoscopic instrumental disinfection is done by using- \nSelect and explain. \nA. Formalin, B. Glutaraldehyde, C. Ethylene oxide, D. Gamma radiation', 'role': 'user'}, {'content': "Answer: B \nExplanation: Glutaraldehyde is especially effective against the tubercle bacilli, fungi, and viruses. It is less toxic and irritant to eyes and skin than formaldehyde. It has no deleterious effects on the cement or lenses of instruments such as cystoscope and bronchoscope. It can be safely used to treat corrugated rubber, anesthetic tubes, face masks, plastic endotracheal tubes, metal instruments, and polythene tubings REF:Ananthanarayan and Panicker's Textbook ofMicrobiology 8thEdition pg no:36", 'role': 'assistant'}]