Which of the following statement(s) is/are correct about the attitudes of Alvars and Nayanars towards caste system?
I. Alvars and Nayanars initiated a movement of protest against the caste system and the dominance of Brahmanas or at least attempted to reform the system.
II. Alvars and Nayanars always supported the caste system in the society.
III. The importance of the traditions of the Alvars and Nayanars was sometimes indicated by the claim that their compositions were as important as the Vedas