how did world war i affect the russian revolution of 1917

a) the communists who overthrew russia’s government gained support by opposing russia’s participation in the war.
b) the german conquest of russia resulted in a surge of political protests based on enlightenment ideas.
c) the war produced high levels of nationalism and patriotism, leading to the establishment of a fascist government.
d) the russian military became increasingly powerful, allowing it to take control of russia’s monarchy.