Historians investigating the reasons for America's entry into World War I might reasonably come to any of the following conclusions EXCEPT which?
A. The United States would not have entered into World War I if Woodrow Wilson had not been elected president
B. The sinking of the Lusitania played a significant role in swaying public opinion toward entering the war
C. Economic interests, such as trade relations with Allied nations, influenced America's decision to join the war effort
D. German unrestricted submarine warfare, particularly the sinking of American ships, was a key factor in prompting U.S. involvement
E. The Zimmermann Telegram, in which Germany proposed a military alliance with Mexico against the United States, was a catalyst for American entry into the war