Which of the following does not accurately describe transistors?
a. both npn and pnp transistors consist of an emitter, base, and collector.
b. both npn and pnp transistors consist of a base composed of an n-type material.
c. both npn and pnp transistors consist of p-type and n-type material.
d. both npn and pnp transistors operate in the same manner but with interchanged terminals and opposite directions of
voltage and current.