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 ComplexNumber
    {
        private:
        float R;
        float I;
        public:
        ComplexNumber():R(0), I(0){}
        ComplexNumber operator ()(float real, float imag)
        {
            R += real;
            I += imag;
            return *this;
        }
        ComplexNumber operator() (float real)
        {
            R += real;
            return *this;
        }
        void Print()
        {
            cout << "(" << R << "," << I << ")" << endl;
        }
    };
   int main()
    {
        ComplexNumber comp1, comp2;
        comp2 = comp1(5.1, 2.5);
        comp1(3.4, 3.5);
        comp2(4.3);
        cout << "Complecx Number = ";comp1.Print();
        cout << "Complecx Number = ";comp2.Print();
        return 0;
    }

1. Complecx Number = (0,6)
  Complecx Number = (2,3.2)
2. Complecx Number = (5.1,2.5)
  Complecx Number = (2,3.2)
3. Complecx Number = (8.5,6)
  Complecx Number = (9.4,2.5)
4. Compilation Error
5. None of these

Correct Option: C

In this program, We are returning the real and imaginary part of the complex number by using function call operator.