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【单选题】
If it were discovered that the import dollar amount shown for 1978 was incorrect and should have been $ 5. 3 billion instead, then the average ( arithmetic mean) import dollar amount per year for the 17 years would be how much less?A.
$100 million
B.
$53 million
C.
$47 million
D.
$17 million
E.
$7 million
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