Who among the following rulers was defeated in the battle for Pataliputra by Chandragupta Maurya?

Chandragupta Maurya, with the astute guidance and strategic counseling of Chanakya (Kautilya), overthrew Dhana Nanda, the last ruler of the Nanda dynasty, around $322\text{BCE}$ to conquer Pataliputra and establish the Mauryan Empire.