单选题

已知关键字序列为(51,22,83,46,75,18,68,30),按关键码字51进行一趟快速排序,完成后的序列为()

Question

A. (30,22,18,46,51,75,68,83)

B. (30,18,22,46,51,75,83,68)

C. (30,18,22,46,51,75,68,83)

D. (18,22,30,46,51,68,75,83)