Correct statements about the Rabi cropping season:
I. Rabi crops are winter-sown (Statement I): Rabi crops are planted in winter.
II. Sowing from October to December and harvesting from April to June (Statement II): This is the usual Rabi crop cycle.
III. Punjab, Haryana, and Uttar Pradesh are significant for wheat production (Statement IV): These states are important wheat producers during the Rabi season.
Statement III is wrong because Maize, Cotton, and Jute are Kharif crops, not Rabi crops.