Which of the following kingdoms was divided into subdivisions called Aharas or Rashtras that meant districts?

Which of the following kingdoms was divided into subdivisions called Aharas or Rashtras that meant districts?
निम्नलिखित में से किस राज्य को ‘आहार’ या ‘राष्ट्र’ नामक उपविभागों में विभाजित किया गया था, जिनका अर्थ ‘जिले’ होता था?

Satavahana/ सातवाहन Kushana/ कुषाण Parthian/ पार्थियन Shaka/ शक