Consider the following statement: There is renewed thrust on production of Millet Crops. Which of the following statement(s) is/are attributable to Ragi Crop? 1. Ragi is a rain-fed crop and mostly grows well in black soil. 2. Ragi grows well on red, black, sandy, loamy and shallow black soils. 3. It is a crop of dry regions and is rich in iron, calcium and roughage. 4. Karnataka, Tamil Nadu, Jharkhand, Rajasthan and Arunachal Pradesh are major ragi-producing states. How many of the statements given above are correct?