The correct options are
A War prisoners were usually made slaves.
D Slaves reached high position in military and administration.
Slavery was prevalent during the reign of the Delhi Sultans. War prisoners were usually made slaves. The slaves of Muslims were treated better by their masters compared to the slaves of Hindus. The Nobles and the Sultans were known to keep a large number of slaves. The slaves were provided with education, military training and umpteen opportunities. Slaves reached high positions in both the administration and the military.