Which statement describes an event that was important to the unification of Italy?
A.
Austria and France conspired to place King Victor Emmanuel in charge of the Papal States.
B.
Count di Cavour persuaded Otto von Bismarck to help Sardinia fight the Austrians.
C.
The pope agreed to abide by the decisions of Giuseppe Mazzini's revolutionary council.
D.
Giuseppe Garibaldi's Redshirts defeated the Kingdom of the Two Sicilies.