下列程序的输出结果是( )。#include<iostream>using namespace std;class TestClass{static int i;public:TestClass(){i++;}~TestClass(){i--;}static int getVal(){retum i;}};int TestClass∷i=0;void fun(){TestClass ob2;cout<<ob2.getVal();}int main(){TestClass obi;fun();TestClass*ob3=new TestClass;cout<<ob3->getVal();delete ob3;cout<<TestClass∷getVal();retum 0;}
A.111
B.121
C.211
D.221