For a BJT to operate in the Active Region for linear amplification, its junctions must be biased as:
ABoth junctions forward biased
BEmitter-Base reverse biased, Collector-Base forward biased
CBoth junctions reverse biased
DEmitter-Base junction forward biased, Collector-Base junction reverse biased
Explanation
Active mode requires forward biasing the EB junction to inject carriers and reverse biasing the CB junction to sweep carriers across.

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