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': 'Sterilization of culture media containing serum is by: \nSelect and explain. \nA. Autoclaving, B. Micropore filter, C. Gamma radiation, D. Gamma radiation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Autoclaving', 'role': 'assistant'}]