Option c is the correct answer. Kamandaka's Nitisara is a Sanskrit treatise on statecraft and political morality. It was composed in the 7th century CE, and it is based on the Arthashastra of Kautilya. The Nitisara is divided into 20 chapters, and it covers a wide range of topics, including the duties of the ruler, the organization of the state, the use of force, and the importance of morality in politics.