The correct option is B Chandragupta
The Mauryan empire was established in 321 BCE. It was founded by Chandragupta Maurya, with the help of his mentor Chanakya. Chanakya took Chandragupta Maurya to the prestigious university of Taxila where Chanakya was a teacher. With his teacher, Chanakya’s help, Chandragupta went on to establish one of the mightiest empires India had ever seen the Mauryan empire. Chandragupta defeated the last Nanda king Dhana Nanda.