This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
[{'content': 'Duration of treatment is multibacillary leprosy according to WHO is - \nSelect and explain. \nA. 6 months, B. 1 year, C. 2 years, D. 5 years', 'role': 'user'}, {'content': 'Answer: B \nExplanation: For multibacillary cases, adequate treatment implies that the patient has recieved 12 monthly doses of combined therapy within 18 months. Reference; Park&;s Textbook of preventive and social medicine, 24th edition.Pg no. 340', 'role': 'assistant'}]