Consider the following pairs with respect to five-year plans :
Plan Period
1. First Five year Plan - 1951 to 1956
2. Fourth Five Year Plan: - 1966 to 1971
3. Sixth Five Year Plan - 1980 to 1985
Which of the pairs given above are correctly matched?
1
1 and 2 only
2
1 and 3 only
3
2 and 3 only
4
1, 2 and 3