有以下程序main ( ){ int num[4] [4]={{1,2,3,4},{5,6,7,8}, {9,10,11,12}, {13,14,15,16}},i, j; for (i=0;i＜4; i++) { for(j=1; j＜=i; j++) printf ("%4c",' '); for(j=______;j＜4;j++) printf ( "%4d', num [i] [j] ); printf ( "/n" ); }} 若要按下形式输出数组右上半三角 1 2 3 4 6 7 8 11 12 16

A．i-1

B．i

C．i+1

D．4-i