In India, which cropping system is having the maximum area under cultivation?

Correct option is B

Option (a): Incorrect
• Rice–rice system is practiced mainly in coastal and irrigated areas but covers much less area than Rice–Wheat.
Option (b): Correct
• The Rice–Wheat system is the largest cropping system in India, dominant in Indo-Gangetic plains (Punjab, Haryana, UP, Bihar).
• It covers millions of hectares and forms the backbone of national food grain production.
Option (c): Incorrect
• Rice–gram exists in dryland zones but on very limited acreage.
Option (d): Incorrect
• Rice–lentil is common in Eastern India but far smaller in total area.