下面程序的运行结果是 。a=1; b=2; c=2;while (a<b<c) {t = a ; a = b ; b = t ; c - - ;}printf ("%d , %d, %d", a, b, c);A) 1, 2, 0 B) 2, 1, 0 C) 1, 2, 1 D) 2, 1, 1为什么C的值为0?