Number of Virtual tables and Virtual Pointers in a C++ Program

Question

Let say we have below program:

class A
{     public:
      virtual fun(){};
};
class B:public A
{     public:
     virtual fun(){};
};
int main()
{
     A a1         


        

Answer 1

This program can be optimized to be exactly like this one:

int main(){}

So, "none" is a possibility.