Which two details support the central idea that harun al-rashid was an extremely rich and learned ruler?
a.“harun al-rashid himself was a big supporter of the arts and music, and these artistic pursuits flourished, while he reigned as caliph.”
b. “a center of the arts and learning, baghdad was also a city of dazzling wealth and luxury.”
c.“harun al-rashid became the fifth caliph of the abbasid dynasty in 786, and went on to become its most famous and celebrated leader.”
d.“harun al-rashid was the second son of caliph al-mahdi, the 3rd abbasid caliph of the arab empire.”