单选题：下述程序段执行后，输出的结果是()‍‌#include‍‌intmain()‍‌{‍‌inta，b;‍‌for(a=，b=;a=)break;‍‌if(b%==)‍‌{‍‌b+=;continue;‍‌}‍‌}‍‌printf(“%d”，a);‍‌return;‍‌}‍ABCD