How Did the Political Center of Islam Change After the Mongol

How did the political center of Islam change after the Mongol invasions?

A) Baghdad remained the capital of Islam, but under the control of successive Mongol dynasties.
B) The center of Islam passed with the withdrawal of the invaders into the steppes of central Asia.
C) Baghdad became a provincial backwater, supplanted by Cairo to the east and soon thereafter Istanbul to the north.
D) The political center of Islam was removed to sub-Saharan Africa.