What Was the Significance of Picasso's Famous Work Guernica

What was the significance of Picasso's famous work Guernica?

A) The work showed the horror of the atrocities committed by both sides during the Spanish Civil War.
B) The work showed the righteousness of the republican cause in the Spanish Civil War.
C) Spaniards on both sides of the civil war demanded peace.
D) The work blamed all of the violence in Spain on the Soviets.
E) The work glorified Franco and helped him seize power.