Which of the Following Best Describes the Bedrock in the Sierra

Which of the following best describes the bedrock in the Sierra Nevada Mountains in California?

A) Batholiths crystallize at the surface, so they are simply still in place.
B) Batholiths crystallize below the surface but were later exposed by way of erosion of overlying material.
C) The batholiths were washed downhill from distant mountains and deposited here.
D) Batholiths crystallize below the surface but then flow upwards towards the surface.