In a P-Type Semiconductor, Conceptually, How Is the Charge Carried

In a p-type semiconductor, conceptually, how is the charge carried in the material?

A) Semiconductors do not conduct and therefore have no charge carriers.
B) Ions travel through the material as positive or negative charges.
C) Electrons migrate through the material
D) Vacancies in charge or 'holes' migrate through the material
E) None of the above.