What Did Michael Doyle Find in His 1984 Study of War

Multiple Choice

What did Michael Doyle find in his 1984 study of war and democracy?

A) He found that the only war fought between liberal democracies was World War I.
B) He found that from 1815 to 1980, there were no wars fought between liberal democracies.
C) He found that from 1815 to 1980, there were only three wars fought between liberal democracies.
D) He found that democracies frequently start wars with other democracies.