Correct option is D
The Khetri and Kolihan regions in Rajasthan are famous for their copper deposits. These fields are known for significant reserves of copper ore, and the Khetri Copper Complex
The Hindustan Copper Limited (HCL) operates the Khetri Copper Complex, a major state-owned copper mining company in India.
Copper is crucial for electrical wiring, electronics, and renewable energy technologies.
Singareni and Singrauli: Known for coal mining; Singareni is located in Telangana, and Singrauli is in Madhya Pradesh and Uttar Pradesh.
Pench and Kanhan: Famous for coal deposits, located in the Chhattisgarh and Madhya Pradesh regions.
Jharia and Raniganj: Known for coal mining, particularly in Jharkhand (Jharia) and West Bengal (Raniganj).