Large Copper Deposits, Called Porphyry Copper Deposits, Form Because

Multiple Choice

Large copper deposits, called porphyry copper deposits, form because:

A) copper accumulates within and near intrusions that have a porphyritic texture
B) seawater is heated and rises to the surface, forming black smokers
C) a change in Earth's atmosphere caused copper to be deposited by groundwater
D) deep groundwater, rich in lead and zinc, encounters buried hills of granite