下列序列中,( )是执行第一趟快速排序后所得的序列。
A[68,11,18,69] [23,93,73]
B[68,11,69,23] [18,93,73]
C[93,73] [68,11,69,23,18]
D[68,11,69,23,18] [93,73]
A[68,11,18,69] [23,93,73]
B[68,11,69,23] [18,93,73]
C[93,73] [68,11,69,23,18]
D[68,11,69,23,18] [93,73]