This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sterilization and Disinfection, Subject name: Social & Preventive Medicine
[{'content': 'Percentage of bleaching powder used to disinfect feces - \nSelect and explain. \nA. 2%, B. 5%, C. 10%, D. 15%', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 5% Agents suitable for disinfection of faeces and urineDisinfectantAmount per litrePercent1. Bleaching powder2. Crude phenol3. Cresol4. Formalin50g 100 ml 50 ml 100 ml510510", 'role': 'assistant'}]