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题目材料：
For the years 1991 through 1997, what was the ratio of the range of the average annual salaries of maintenance workers at Company X to the range of those nationwide in Country A ?
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A.1 to 4
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B.1 to 2
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C.3 to 4
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D.2 to 1
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E.4 to 1
D显示答案
