The correct option is B Karnataka
Karnataka is the top producer of ragi in India. In Karnataka, ragi growing areas are concentrated in the southern maidan. Tumakuru district is the leading producer of ragi, followed by Ramnagar, Bengaluru Rural, Hassan, Mandya, Kolar, Chikballapur, Shivamogga, Chikkamagaluru, Chamarajnagar, and Davanagere districts.