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': 'Sputum can be disinfected by which of the following? \nSelect and explain. \nA. Boiling, B. Burning, C. 5% cresol, D. Autoclaving', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Methods of Sputum disinfection: Best way is to receive in gauze or paper handkerchiefs & destroyed by burning. By boiling or autoclaving for 20 minutes at 20 lbs pressure With 5 % cresol. Ref: Park, 20th Edition, Page 118.', 'role': 'assistant'}]