`npn` transistors are preferred to `pnp` transistors because they have
A. low cost
B. low dissipation of energy
C. capable of handling large power
D. electrons have high mobility than holes and hence high mobility of energy

`npn` transistors are preferred to `pnp` transistors because they have
A. low cost
B. low dissipation energy
C. capable of handling large power
D. electrons have high mobility than holes and hence high mobility of energy.

`npn` transistors are preferred to `pnp` transistors because they have
A. they have low cost
B. they have low dissipation energy
C. they are capable of handling large power
D. electrons have high mobility thn holes.