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＜＜cs2.val＜＜endl;

A．14
B．24
C．34
D．54