Which of the Following Best Summarizes the Effect of the Crusades

Which of the following best summarizes the effect of the Crusades on the Southwest Asia?

A) The Crusades were economically devastating to the important centers of trade such as Jerusalem.
B) Muslim feelings hardened against the Franks and the millions of Christians who had previously lived peacefully in Egypt and Syria.
C) The establishment of the Crusader states threatened to undermine the religious dominance of Islam.
D) The Crusades struck a permanent blow to the prestige and power of cities like Baghdad and Cairo.