Answer:
The correct answer is P-type (option B).
P-type semiconductor refers to a positive semiconductor, this is because boron has fewer atoms in its outer shell than silicon, so the resulting material has empty spaces where electrones woud be located, and these spaces move through the cristal conducting electricity.
P-type semiconductors are made by the process of doping, which can be seen as a process of adding impurities to the material, and by doing so it increases its conductivity.
As boron is added to the silicon it is called an extrincic type of semiconductor.
