The correct option is C Kempinakote in Hassan district
More than 80% of the total gold production in India can be attributed to Karnataka which makes it the leading producer of gold in India. Hutti in Raichur district is the biggest gold mine in Karnataka and in India. Other places where gold is produced are Bellara in Tumakuru district and Ajjanahalli near Sira, Mulgund, and Kappatagudda in Gadag district, and Kempinakote in Hassan district.