Option b is the correct answer. Dinara was the name of the gold coins issued by the Gupta rulers in ancient India. The word Dinara is derived from the Latin word Denarius, which was a silver coin used by the Roman Empire. The Gupta kings adopted the Dinara as a symbol of their political and economic ties with the Romans. The Dinara crius were made of pure gold and weighed about 8 grams. They had various designs and inscriptions on both sides, depicting the images and names of the Gupta kings, their queens, their gods, and their symbols. Some of the most famous Dinara coins are those of Samudragupta, Chandragupta II, and Eumaragupta I. Important Tips Important coins during ancient time: In ancient times, cowry popularly known as kaudi (shell) was used worldwide as shell money. The official currency of Mauryans was Pan. Pan was made up of silver and equivalent to 3 / 4 3/4 tola. Nishka was the gold coin of Mauryans.