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': 'Which is a form of cold sterilization - \nSelect and explain. \nA. Gamma rays, B. Beta rays, C. Infrared rays, D. Autoclave', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ionising radiations:Xray ,Gamma rays Cold sterilisation is a process in which sterilisation is carried out at a low temperature with the help of chemicals,radiations,membranes and all other means excluding higher temperature REF:Ananthanarayan & Panicker's Textbook of Microbiology 9th edition pg no:33", 'role': 'assistant'}]