One way in which the operation of an NPN transistor differes

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One way in which the operation of an NPN transistor differes from that of a PNP transistor is that—

1. The emitter junction is reverse-biased in the NPN
2. The emitter injects minority carriers into the base region of the PNP and majority carriers in the base region of the NPN
3. The emitter injects holes into the base region of the PNP and electrons into the base region of the NPN
4. The emitter injects electrons into the base region of the PNP and holes into the base region of the NPN

Correct Option: C

NA