Which of the Following Is the Most Likely Explanation for the Final

Which of the following is the most likely explanation for the final passage of the Nineteenth Amendment?

A) Suffragists' state-by-state efforts had largely failed.
B) Congressmen from western states backed the amendment in exchange for an end to suffragist support of Prohibition.
C) The Wilson administration eventually supported the amendment in response to public pressure.
D) Jeanette Rankin of Montana cast the deciding vote.
E) Suffragettes refused to support the war effort unless they were promised the vote at the end of the war.