有以下程序： #include ＜stdio.h＞ main() { int a[]={2, 3, 5, 4}, i; for(i=0; i＜4; i++) switch(i%2) { case 0: switch(a[i]%2) { case 0: a[i]++; break; case 1: a[i]--; } break; case 1: a[i]=0; } for(i=0; i＜4; i++)printf("%d", a[i]); printf("\n"); } 程序运行后的输出结果是______。

A．852
B．963
C．741
D．875421

A．switch(a+b)<br/>{ case 1: printf("*\n")；<br/>case 2+1: printf("**\n");}
B．switch((int)x);<br/>{ case 1: printf("*n");<br/>case 2: printf("**\n");}
C．switch(x)<br/>{ case 1.0: printf("*\n");<br/>case 2.0: printf("**\n");}
D．switch(a+b)<br/>{ case 1: printf("*n");<br/>case c: printf("**\n");}