单项选择题

有以下程序:   void sort(int a[ ],int n)   { int i,j,t;    for(i=0;i<n-1;i+=2)     for(j=i+2;j<n;j+=2)      if(a[i]<a[j]) { t=a[i];a[i]=a[j];a[j]=t;} }   main ( )   { int aa[10]={1,2,3,4,5,6,7,8,9,10},i;    sort(aa,10);    for(i=0;i<10;i++) printf(“%d”,aa[i]);    printf(“\n”);}   其输出结果是( )。

A.1,2,3,4,5,6,7,8,9,10,
B.10,9,8,7,6,5,4,3,2,1,
C.9,2,7,4,5,6,3,8,1,10,
D.1,10,3,8,5,6,7,4,9,2,