The correct option is A Rishabhdev
Tirthankara, in Jainism, is a saviour who has succeeded in crossing over life’s stream of rebirths and has made a path for others to follow. According to Jain belief, each cosmic age produces its own group of 24 Tirthankaras. The first tirthankara in this present time cycle was Rishabhanatha. He attained moksha on Mount Kailas in the Himalayas,