Yet luck, like oil or money, tends to   sooner or later.

A．break down

B．carry out

C．run out

D．turn down

下列程序的输出结果是______。
main()
int a=1，b=2，c=3,t=0;
if(a＜b) t=a; a=b; b=t;
if(a＜c) t=a; a=c; c=t;
printf("%d, %d, %d\n", a, b, c);