Assertion: The Abbasid Empire was at the height of its glory during the reign of Harun-al- Rashid.
Reason: The Arab Empire flourished soon after the death of Harun-al-Rashid.
(a) A is correct; R is not the correct explanation of A
(b) A and R are correct
(c) A and R are wrong
(d) A is correct, R is the correct explanation of A .