Option b is the correct answer. Mahmud of Ghazni held the distinction of being the first Muslim ruler to issue silver coins with a Sanskrit legend on one side. These remarkable coins, dating back to the 11th century, featured the legend "Sri Madhava" (Sri Krishna) alongside Arabic inscriptions on the obverse and reverse sides, respectively. The presence of Sanskrit legends alongside Arabic inscriptions showcased the influence of both Islamic and local traditions during Mahmud's reign.