All three statements (A, B, and C) about Chandragupta Maurya are historically accurate. He did embrace Jainism in his later years, abdicated the throne in favor of his son Bindusara, and accompanied the Jain saint Bhadrabahu to South India where he attained Kaivalya through Sallekhana (starvation unto death) at Chandragiri hill, Shravanabelagola.