Option a is the correct answer. The Satavahanas were an ancient Indian dynasty that ruled over large parts of the Deccan Plateau from the 3rd century BCE to the 3rd century CE. They are also known as the Andhras in the Puranas, which are ancient Hindu texts. Simuka was the founder of Satavahana dynasty and Gautamiputra Satkarni was the most famous ruler of this dynasty.