In a transistor:

(A) one of the outer layers is heavily doped and is called collector
(B) one of the outer layers is heavily doped and is called emitter
(C) the middle layer is very lightly doped and is called base
(D) one of the outer layer is moderately doped and is called emitter
(E) one of the outer layer is moderately doped and is called collector

Choose the correct answer from the options given below:

(B), (C) and (E) only

In a BJT, emitter is heavily doped.

Base is lightly doped.

Collector is moderately doped.