单项选择题

对序列25,57,48,37,12,82,75,29进行二路归并排序,第二趟归并后的结果为()。

A.25,57,37,48,12,82,29,75
B.25,37,48,57,12,29,75,82
C.12,25,29,37,48,57,75,82
D.25,57,48,37,12,82,75,29