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': 'Hot cold phenomenon is seen due to which toxin of staphylococci: \nSelect and explain. \nA. Alpha lysin, B. Beta lysin, C. Gamma lysin, D. Theta lysin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is. b. Beta lysin', 'role': 'assistant'}]