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(){CSatic cs1；cout＜＜cs1．val＜＜""；CStatic cs2；CStatic cs3,cs4；cout＜＜cs2．val＜＜endl；}

A．14

B．24

C．34

D．54