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题目材料：
For the employees in the customer service job category in 2000, the average billing rate was $18.50 per hour. Which of the following is the best estimate of the total amount billed by employees in the customer service job category in 2000?
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A.$12,000,000
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B.$1,200,000
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C.$120,000
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D.$12,000
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E.$1,200
B显示答案
