Correct Option: A
The Satavahana kings mostly used lead as the material for their coins. Most of their coins are in that metal. Silver coins are very rare. Next to lead they used an alloy of silver and copper, called “potin”. Many copper coins are also available. Although the Satavahana coins are devoid of any beauty or artistic merit, they constitute a valuable source-material for the dynastic history of the Satavahanas.