Which of the following soil and climatic conditions is most critical for the high-quality cultivation of long-staple cotton in India?

Options:

• A: Deep alluvial soil with continuous heavy rainfall throughout the growing and harvesting period.
• B: Acidic laterite soil with high humidity and low temperature during the ripening stage.
• C: Well-drained black cotton soil (regur), at least 210 frost-free days, and bright sunshine during harvesting.
• D: Marshy saline soil with high water-logging capacity and moderate winter temperatures.

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