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题目材料：
If Company X employed a total of 200 maintenance workers annually for the years 1991 through 1993 and a total of 150 maintenance workers annually for the years 1994 through 1997, what was the average amount of money spent annually by Company X on the salaries of its maintenance workers for the years 1991 through 1997 ?
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A.$1,800,000
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B.$2,400,000
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C.$3,600,000
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D.$4,000,000
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E.$4,800,000
C显示答案
