The correct options are
A Dhana Nanda
B Chandragupta Maurya
C Kharavela
Jainism gained patronage from the rulers of north India. In the Magadha kingdom, the Nanda ruler Dhana Nanda was believed to be a supporter of Jainism. Also, Jainism gained royal patronage from Mauryan ruler Chandragupta Maurya and Kharavela, the ruler of Kalinga or modern-day Odisha.