Mussolini Became Prime Minister of Italy

Mussolini became prime minister of Italy

A) when King Victor Emmanuel, reacting to Fascist intimidation, appointed him.
B) because the Fascio di Combattimento won a majority of seats in the parliamentary election.
C) after groups of squadristi destroyed the socialist opposition to Fascist rule.
D) when he mounted a violent coup d'etat and seized control of the government.
E) when he made an alliance with the pope and the Bolshevik government of Russia.