Which of the following are true with regard to coal in India?
I. Coal is found in sedimentary rocks
II. The best quality of coal is lignite
III. The largest and oldest coalfield in India is known as the 'Ruhr of India'.
IV. The Damodar river valley is popularly known as the Ruhr of India.
A. I and IV
B. I, II and III
C. I, III and IV
D. II, III and IV
Answer: Option C
Ans should be option A