The correct answer is (a), (b) and (c). Explanation & Key Takeaways: Kelkar Committee (2013): • The Kelkar committee was constituted in May 2011 under the Chairmanship of Vijay Kelkar. • The committee submitted a report in 2013. • The committee studied the regional imbalance with regard to irrigation, agriculture, education, business, industries, self-employment and private investment. • According to the recommendations of this committee, the following communities from Maharashtra are enumerated as Primitive Tribal Groups: • Katkaris • Madia Gond • Kolam • Katkaris, Madia Gond, and Kolam tribes can be found in the Vidarbha region, mainly in the districts of Gondia, Chandrapur, Bhandara and Nagpur.