In Contrast to Kublai Khan's Actions When He Captured Hangzhou,what

In contrast to Kublai Khan's actions when he captured Hangzhou,what were Hulagu's actions after he captured Baghdad?

A) He kept the caliph on the throne in order to prevent a rebellion.
B) He sought to win the loyalty of the people by building schools and hospitals.
C) He permitted his troops to savagely slaughter the city's population.
D) He signed a peace treaty with the elites who sought Mongol order to preserve the ancient city.