Why Do Storm Systems Move from West to East in Mid

Multiple Choice

Why do storm systems move from west to east in mid latitudes of the Northern Hemisphere?

A) The storms are steered by approximately west to east winds aloft that are approximately geostrophic winds produced by Coriolis forces.
B) The prevailing wind is from the east, and the storm systems move toward the surface flow.
C) The prevailing wind is from the west.
D) The continents break up air flow that would normally be south to north and the Coriolis force turns the storms to the right, or toward the east.