Assertion (A): In the beginning, only high caste Kshatriya communities adopted Jainism.
Reason (R): Vardhaman Mahavira belonged to a well-known Kshatriya community

Mahavira, also known as Vardhamāna, was the twenty-fourth tirthankara (ford-maker) who revived Jainism. In the Jain tradition, it is believed that Mahavira was born in the early part of the 6th century BC into a royal kshatriya family in present-day Bihar, India. He abandoned all worldly possessions at the age of 30 and left home in pursuit of spiritual awakening, becoming an ascetic. Mahavira practiced intense meditation and severe austerities for 12 years, after which he is believed to have attained Kevala Jnana (omniscience).