Which of the following statements is correct regarding the Terai soil belt in Bihar?

Options:

• A: It is rich in organic matter and nitrogen but deficient in phosphate, and is highly suitable for sugarcane and paddy cultivation.
• B: It is found as a narrow strip along the southern border of Bihar adjacent to Jharkhand.
• C: It is completely devoid of any vegetation due to high salinity and alkalinity.
• D: It is formed by the weathering of ancient crystalline granitic rocks of the Chhotanagpur plateau.

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