Q: In which of the following states high yielding varieties of food grains were introduced as part of the first phase of Green Revolution (1966-72)? 1. Andhra Pradesh 2. Tamil Nadu 3. Punjab 4. Haryana Select the correct answer using the code given below:
(a)1, 2 and 3
(b)2, 3 and 4
(c)1 and 2 only
(d)3 and 4 only
Correct Answer: (d)