Explanation
The book of ancient India that has the love story of the son of the founder of the Sunga Dynasty is "Malavikagnimitra." It is a Sanskrit play written by the renowned ancient Indian playwright Kalidasa.
The story of the play revolves around King Agnimitra, who falls in love with a beautiful servant girl named Malavika. However, Malavika is already in love with another man, who is later revealed to be Agnimitra's long-lost son, who was adopted and raised by a noble family.
Throughout the play, Agnimitra struggles to win Malavika's love while also trying to establish a peaceful reign over his kingdom. The play is known for its poetic language, intricate plot, and vivid portrayal of ancient Indian court life.
The other options, Swapnavasavadatta, Meghadoota, and Ratnavali, are also famous works of ancient Indian literature, but they do not have the love story of the son of the founder of the Sunga Dynasty.
