Which of the following statements are correct

1    The concept of 'dominant caste' was first introduced by M.N. Srinivas in his study of a village in Mysore

2    Ownership of land, numerical strength and political clout help a caste to establish its dominance in a community

3.   Dominant caste always enjoys a high ritual status in a particular region

4.   Dominant caste may serve as a 'reference group' for other subordinate castes of a particular region

Select the correct answer using the code given below: