Baghdad First Became a Symbol for the Glories of the Muslim

Multiple Choice

Baghdad first became a symbol for the glories of the Muslim dominions when

A) emissaries sent by Charlemagne returned with stories about the untold wealth of the city.
B) tourism became commonplace in the sixth century.
C) the Byzantine Empire fell.
D) The Tales of The Arabian Nights was translated into the major languages of western Europe.
E) none of these choices