Option d is the correct answer. The two main currencies of the Sultanate period were Tanka and Jital, introduced by the Iltutmish. Some smaller currencies were also in circulation. Baruni mentions Dangs and Dirams in use at the capital Delhi. The equation between these currencies in the north has been worked out as: 1 silver tanka = 48 =48 jital = 192 =192 dangs = 480 =480 dirams Important Tips A Dam was a small Indian copper coin. This coin was first introduced by Sher Shah Suri during his rule of India between 1540 and 1545. He also used Rupiya which was a the silver and Mohur, a gold coin.