'Self-sufficiency' in food, in the true sense of freedom from hunger, has not been achieved in India in spite of a more than threefold rise in foodgrains production over 1950 to 1990. Which of the following are the reasons for it? A. the green revolution has been restricted to small pockets of the country. B. the cost of food is too high compared to the earnings of the poor C. too much emphasis is laid on wheat and paddy compared to the coarse grains. D. the gains of the green revolution have largely accrued to the cash crop rather than food crops.