Why Does Volcanic Dust Tend to Travel Farther Than Wind-Blown

Why does volcanic dust tend to travel farther than wind-blown dust derived from the continents?

A) because volcanic dust is erupted high into the atmosphere
B) because volcanic dust is less dense than dust derived from the continents
C) because volcanic dust is composed of quartz,whereas dust derived from the continents is composed of feldspar
D) all of the above