Which of the following is true in the context of the 'Mauryan Empire'?

A. Chandragupta was supported by a wise man named Vishnudutta.

B.  Taxila lay on the route from north to south India.

C. In some areas such as central India, there were forests where people gathered forest produce and hunted animals for food.

D. Most Ashokan inscriptions are in the Brahmi script.