The correct answer is: None of the above.
The largest iron ore reserves in the world are located in the Carajás Mineral Province in Brazil. The province contains an estimated 18.2 billion metric tons of iron ore, which is more than half of the world’s known reserves.
The Rajmahal Hills are a mountain range in eastern India. The hills are composed of sandstone and shale, and they are rich in iron ore. However, the iron ore reserves in the Rajmahal Hills are not as large as those in the Carajás Mineral Province.
The Chiria Hills are a mountain range in eastern India. The hills are composed of iron ore, and they are one of the largest iron ore deposits in India. However, the iron ore reserves in the Chiria Hills are not as large as those in the Carajás Mineral Province.
Jharia is a town in Jharkhand, India. The town is located in the Jharia coalfield, which is one of the largest coalfields in India. However, Jharia is not known for its iron ore reserves.