What dangerous myth was taking place among Germans at the end of WW1?

The stab-in-the-back myth, literally "dagger stab legend") was the notion, widely believed and promulgated in right-wing circles in Germany after 1918, that the German Army did not lose World War I on the battlefield but was instead betrayed by the civilians on the home front, especially the republicans who overthrew the Hohenzollern monarchy in the German Revolution of 1918–19. Advocates denounced the German government leaders who signed the Armistice on November 11, 1918, as the "November Criminals".

give brainliest if you please

when in doubt choose c

it's what my teacher told my class when we were going into psats