Volcanic Domes Commonly Are Partially Destroyed When

Volcanic domes commonly are partially destroyed when

A) gases are released slowly out the top of the dome, dissolving it.
B) steep parts of the dome collapse and cause small pyroclastic flows.
C) fast-moving, low-viscosity lava carries away part of the dome.
D) the center of the dome collapses, forming a composite volcano.
E) All of these.