(A) Yadavs of Bihar and Uttar Pradesh: The Yadav community is present in both states, and forms a large population group.
(B) Vokkaligas of Karnataka: The Vokkaligas are a dominant agricultural community in Karnataka.
(C) Jats of Punjab: The Jats are a significant agricultural community in the Punjab region, known for their dominance in land ownership.
(D) Khammas of Tamil Nadu: The Khammas are a dominant agricultural community in Andhra Pradesh, not Tamil Nadu.