What Was the Level of Trade in the Abbasid Empire

What was the level of trade in the Abbasid empire?

A) Long-distance trade with Africa, the Mediterranean, India, and China continued to flourish despite periodic interruption.
B) Trade with the East grew, but the Crusades eliminated the western trade routes.
C) Trade with Africa and the Mediterranean continued to expand, but the wars in India disrupted the eastern trade routes.
D) As a whole, long-distance trade along the traditional caravan routes virtually ceased during the Abbasid empire.