The Nineteenth Amendment Granting Women the Right to Vote Was

The Nineteenth Amendment granting women the right to vote was finally passed in 1920 because

A) a large majority of voters favored it.
B) of women's contribution to the war effort in World War I at home and abroad.
C) the women agitating for it moderated their disruptive campaign.
D) almost every state already allowed women to vote in local elections.