Which One of the Following Statements Best Explains Why Semiconductors

Multiple Choice

Which one of the following statements best explains why semiconductors in transistors are doped?

A) Doping makes the charge carriers mobile.
B) Doping makes the charge carriers immobile.
C) Doping makes the semiconducting material non-conducting.
D) Doping increases the conductive properties of the semiconductors.
E) Doping converts the semiconducting material into a metallic material like copper.