#include

using namespace std;

int volume(int l = 1, int w = 1, int h = 1);

int main()

{

cout << "Volume = " << volume()<< endl;

cout << "Volume = " << volume(5, 4)<< endl;

cout << "Volume = " << volume(34)<< endl;

return 0;}

int volume(int l, int w, int h)

{return l * w * h;}

Which concept of the following is achieved in the program?

Select one: a. overloading b. overriding c. encapsulation d. Not listed