How Was the Egalitarianism of Early Islam Transformed by the Abbasid

How was the egalitarianism of early Islam transformed by the Abbasid caliphs?

A) They lived in the splendor of a Sasanian court.
B) Greek became the language of the court.
C) They were increasingly accessible to the public. 
D) Caliphs strove to appear as common Muslims in dress and surroundings.
E) Living in Sasanian courts, they were addressed as "the shadow of God on earth."