In a p-n-p transistor biased in the active region, the dominant

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In a p-n-p transistor biased in the active region, the dominant carrier flow is—

1. Excess holes drifting in the base region
2. Minority carriers electrons injected from base to emitter
3. Minority carriers diffusing in the emitter region
4. Due to concentration gradient of holes, holes diffusing in the base region

Correct Option: D

NA