Which of the Following Best Describes the Ruling Style of the Guptas

Which of the following best describes the ruling style of the Guptas?

A) The Guptas set up a republic similar to that found on the Greek isles.
B) The Guptas permitted local rulers to retain much of their authority as long as they paid tribute to the Gupta king.
C) The Guptas stripped local lords and rulers of all their titles and made them vassals of the Gupta state.
D) The Guptas ruled through a well-organized and widespread bureaucracy.