Large Crystals Found in a Fine-Grained Groundmass Can Indicate

Multiple Choice

Large crystals found in a fine-grained groundmass can indicate:

A) origin from a magma with an early intrusive phase followed by an extrusive phase.
B) origin from a magma with an early extrusive phase followed by an intrusive phase.
C) a rock of mixed volcanic-plutonic origin.
D) origin from a magma with an early intrusive phase followed by an extrusive phase AND a rock of mixed volcanic-plutonic origin.
E) origin from a magma with an early extrusive phase followed by an intrusive phase AND a rock of mixed volcanic-plutonic origin.