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
National Guinea worm Eradication Programme was launched in - 
Select and explain. 
A. 1972-73, B. 1975-76, C. 1980-81, D. 1983-84
D: 1983-84
Answer: D: 1983-84 
Explanation: Ans. is 'd' i.e., 1983-84