Volcanic Remnants Like Shiprock, NM Are Much Smaller Than the Volcanoes

Volcanic remnants like Shiprock, NM are much smaller than the volcanoes of the Cascade Mountains because they:

A) have been dormant and erosion has worn away most of its mass
B) are still active and lose much of their mass through eruptions
C) were originally quite small features
D) are young features and haven't had time to grow