下面程序的输出结果为( )。#include<iostream.h>class CStatic{public:CStatic() {val++;}static int val;};int CStatic::val=0;void main(){CStatic cs1;cout<<cs1.val<< "";CStatic cs2;CStatic cs3, cs4;cout<<cs val<<end1;}
A.14
B.24
C.34
D.54