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: Pathology
[{'content': 'Phagocytes kill bacteria through which mechanism \nSelect and explain. \nA. Membrane attack complex killing, B. Oxidative and non-oxidative killing, C. Zipper killing, D. Chemotaxis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]