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
Recommended duration of surveillance after completion of treatment of multibacillary leprosy? 
Select and explain. 
A. 6 months, B. 1 year, C. 2 years, D. 5 years
D: 5 years
Answer: D: 5 years 
Explanation: Ans. is 'd' i.e., 5 years