On Earth,you Would Expect to Find Metamorphic Rocks

Multiple Choice

On Earth,you would expect to find metamorphic rocks

A) at the boundaries of colliding tectonic plates,where upthrust has brought them to the surface.
B) on the ice of the Antarctic because they come only from outer space.
C) around new volcanoes,these rocks having recently set from new molten lava.
D) in layers on the seafloor.