This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Microbiology
Gluteraldehyde is used to sterilize - 
Select and explain. 
A. Endoscopes, B. Corrugated rubber anaesthetic tube, C. Plastic endotracheal tubes, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Ans. is 'd' i.e., All of the aboveo 2% Glutaradehyde (cidex) is an aldehyde disinfectant with a broad spectrum of action against bacteria, fungi, viruses, as well as spores (slow action)o It is most often used for equipment such as endoscopes that cannot be sterilized or disinfected by heat (cytoscopes bronchoscopes)o Glutraldehyde is used for -i) Cystoscopes and bronchoscopesii) Corrgated rubber anaesthetic tubesiii) Face masksiv) Plastic endotracheal tubesv) Polythene tubingvi) Endoscopes