Shisham (Dalbergia sissoo) is highly valued in Bihar's economy. Which of the following ecological conditions best describes its natural habitat and growth characteristics?

Options:

• A: It is an obligate shade-loving plant (sciophyte) that grows exclusively under dense evergreen canopies.
• B: It is a primary colonizer on alluvial soils along riverbanks and is highly tolerant of seasonal flooding but susceptible to waterlogging in heavy clay.
• C: It is restricted to high-altitude acidic soils of the Himalayas and cannot survive in the plains of North Bihar.
• D: It requires extremely high rainfall (>300 cm) and is highly sensitive to frost and drought.

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