How did Sultan Qutubuddin Aibak die ?
(a) He died after a fall from his horse while playing Chaugan (Polo)
(b) He was treacherously slabbed to death by one of his ambitious nobles.
(c) He was killed in a battle with Tajuddin Yildiz, the ruler of Ghazni who entered into a contest with him over the capture of Punjab
(d) He sustained injuries while besieging the fortress of Kalinjar in Bundelkhand and succumbed to them later