Correct Option: B

It is usually held that Chandragupta I was the first imperial ruler who introduced currency system and that the Chandragupta-Kumaradevi type of gold coins were the earliest gold coins of the dynasty. But according to the scholars, it was Samudragupta who first issued Gupta coins that his first gold coins were of standard type and that later on he issued the Chandragupta-Kumaradevi type of coins to commemorate his father's marriage to Lichchhavi princess which had proved to be great benefit to the Gupta dynasty. The minting of silver coins was first started in the reign of Chandragupta II and was continued by Kumargupta I and Skandgupta.