The Arthashastra, the treatise on statecraft and economy, is attributed to

Explanation

1. 01

   Kautilya, also called Chanakya, is traditionally named as its author and as Chandragupta Maurya's minister.

2. 02

   Kalidasa is a poet and dramatist of the Gupta era.

3. 03

   Panini wrote on grammar and Patanjali on yoga and on grammar — neither on statecraft.