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: Social & Preventive Medicine
[{'content': 'Following are the waste types not to be incinerated except \nSelect and explain. \nA. Pressurized gas containers, B. Reactive chemical waste, C. Content of combustible matter above 60%, D. Halogenated plastics', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]