Which one of the following statements cannot be attributed to Firoz Tughlaq?
(a) He restored the rent free lands (inam, Idrar) granted to theologians
(b) He abolished all taxes not sanctioned by Shara
(c) He raised the grants of teachers and stipends for students
(d) He forced Khuts, Muqaddams and Chaudharis to pay grazing tax and house tax
