Which of the Following Was NOT a Reason for a Deterioration

Multiple Choice

Which of the following was NOT a reason for a deterioration in relations between the Ottomans and Christians in the Balkans after the 17th  century?

A) The Ottoman Empire needed tax funds.
B) The Ottoman central government was increasingly hostile toward infidels.
C) The Mongols were invading the Balkans from the north.
D) There was a moral breakdown in provincial and local government.
E) The Balkans increasingly sought their independence.