Which of the following is in the correct order for the transformation of organic matter to high-grade coal?
A) peat,bitumous coal,lignite,anthracite coal
B) anthracite coal,bitumous coal,lignite,peat
C) peat,lignite,bitumous coal,anthracite coal
D) lignite,peat,bitumous coal,anthracite coal
Correct Answer:
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