单项选择题

下面程序段的运行结果是( )。   voidmain( )   {     ihtt,a,b,C;     a=1;b=2;C=2;     while(a<b<c)     {t=a;a=b;b=t;c--;}     cout<<a<<","<<b<<","<<C;   }

A.8
B.9
C.7
D.6