以下各程序段分别运行后，屏幕输出结果描述正确的有
(A)
char c1='A', c2='a', c3='Z', c4='z';
printf("%c=%d %c=%d %c=%d %c=%d\n",
c1, c1, c2, c2, c3, c3, c4, c4);
屏幕输出：A=65 a=97 Z=90 z=121
(B)
char c1 = 'A';
c1++;
printf("%c %d %c\n", c1, c1, c1+2);
屏幕输出：B 66 D
(C)
char c1='A', c2='a', c3='Z', c4='z';
printf("%d %d\n", c2-c1, c4-c3);
屏幕输出：32 32
(D)
int a1 = 65;
char c1 = 'A';
c1 = c1 + 25;
printf("%c %c %c\n", a1, c1, c1-2);
屏幕输出：A Z X
急求答案