Q. Which one among the following statements regarding India's coal is not correct?

• (A) 98 percent of reserves of coal in India belongs to Gondwana period
• (B) Unknown amount of coal lies buried under the Ganga alluvium and the Deccan Trap
• (C) Bituminous coal is found in both lower Gondwana rocks and in Tertiary rocks
• (D) Gondwana coal is mainly found in the river valleys of Damodar, Mahanadi and Godavari