The correct option is D Feroz Tughlaq
Feroz Tughalq reigned over the Delhi Sultanate from 1351 to 1388. He succeeded his cousin Mohammad-bin-Tughlaq following the latter's death. It is Feroz Tughlaq who had the largest number of slaves in his court. He founded several cities around Delhi including Jaunpur, Ferozpur,Ferozabad and Fatehabad.