What happens if the following C++ program is compiled?

[answerhappygod]

#include <iostream>
#include <string>
using namespace std;
class A
{
int a;
public:
A(){
a = 0;
}
void show(){
a++;
cout<<"a: "<<a<<endl;
}
};
 
class B: private A
{
public:
void show(){
show();
}
};
 
int main(int argc, char const *argv[])
{
B b;
b.show();
return 0;
}
a) Error because of the conflicts between two show() function in class B
b) Program will compile successfully
c) Error due to self call in show() function
d) Error because show() function from class A is derived privately