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【单选题】

The average (arithmetic mean) number of trees per acre in a 40-acre plot is 140. If a 10-acre section of the plot contains 90 trees per acre, how many trees are there in the remaining 30 acres

A、5,700
B、4,700
C、4,200
D、3,600
E、2,700
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根据网考网移动考试中心的统计，该试题：

1%的考友选择了A选项

89%的考友选择了B选项

5%的考友选择了C选项

5%的考友选择了D选项

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