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【单选题】
假设12个销售价格记录组已经排序如下：5, 10, 11, 13, 15，35，50, 55, 72, 92, 204, 215 ，使用等宽划分时（宽度为50），55在第几个箱子内？A.
第一个
B.
第二个
C.
第三个
D.
第四个
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