Which of the following texts lays down minute details of administrative and military organisation of the Mauryan empire?

Arthashastra

Arthashastra, possibly composed by Kautilya or Chanakya, traditionally believed to be Chandragupta's minister, is a valuable resource for getting information about the Mauryan empire.
The Arthashastra lays down minute details of the administrative and military organisation of the Mauryan empire.