What is the output of this program?#include <iostream>

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What is the output of this program?

#include <iostream>
    using namespace std;
    class Example
    {
        public:
        Example() 
        {  
            cout << "N::N()" << endl; 
        }
        Example( Example const & ) 
        {  
            cout << "N::N( N const & )" << endl;
        }
        Example& operator=( Example const & )
        { 
            cout << "N::operator=(N const &)" << endl;
        }
    };
    Example function() 
    {
        Example temp;
        return temp;
    }
    int main() 
    {
        Example p = function();
        return 0;
    }

1. N::N(N const & )
2. N
3. N::operator=(N const &)
4. N::N()
5. None of these

Correct Option: D

As we are passing the object without any attributes it will return as N::N().