How Did Marxists View the Economic Downturn That Became Known

How did Marxists view the economic downturn that became known as the Great Depression?

A) They welcomed it because they believed it signaled the imminent downfall of capitalism.
B) They resented it because they believed it would thwart their plans to spread socialism throughout the world.
C) They feared it because they believed it would make the masses reject their labor initiatives.
D) They used it to manipulate public opinion and accelerate the spread of socialism around the worlD.