Because of the Increasingly Important Role Played by Coal as a Viable

Multiple Choice

Because of the increasingly important role played by coal as a viable alternative energy source, the production of coal has been growing at the rate of ​ ​
Billion metric tons/year t years from 1970 (which corresponds to ) . Had it not been for the energy crisis, the rate of production of coal since 1970 might have been only
​ ​
Billion metric tons/year t years from 1970. Determine how much additional coal was produced between 1970 and the end of the century as an alternate energy source. Round your answer to one decimal place.
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A) 121.3 billion metric tons
B) 128.6 billion metric tons
C) 127.0 billion metric tons
D) 118.1 billion metric tons