Option d is the correct answer. The ancient Indian play Mudrarakshasa of Visakhadutt has its subject on the court intrigues at the time of Chandragupta Maurya (who reigned from 320 BCE to 298 BCE), the founder of the Mauryan Empire. The play is a political drama that depicts the conflict between Chandragupta and his chief minister Chanakya on one side, and the deposed Nanda king Rakshasa and his allies on the other. The title Mudrarakshasa means "the signet ring of Rakshasa", which refers to a plot device involving a forged letter that Chanakya uses to trick Rakshasa into joining Chandragupta's side.