I believe A is the most appropriate option in this case and I really hope it’s correct if it is not I am sooo sorry
I made the tenchen of the war with both side go up.
After Italy had agreed to switch sides and help defeat the Entente, they thought they deserved more, being one of the Big Four. Great Britain promised to give them a few of the Slavic countries, but they had other plans to make a large Slavic country known later as Yugoslavia. So, Italy was unhappy because they got cheated by Great Britain.
