Why Was France's War with Austria and Prussia So Important

Why was France's war with Austria and Prussia so important to the beginning of the Reign of Terror?

A) The war meant that national unity became a focus, and political opposition became unpatriotic.
B) The war led to massive food shortages, which eventually led to violence.
C) Defeats against Austria and Prussia led to oppression of the French in occupied areas.
D) Success against Austria and Prussia led to oppression by the French in occupied areas.
E) The war allowed the pretext for violence against the minority Protestants in France.