OOPS

-
interface I1
    {
        void Add();
    }

    class A
    {
        public void Add()
        {
            Console.WriteLine("A");
        }
    }

    class B : A, I1
    {

    }
Reason: Class B inherit parent class data member and member function so  Interface I1 get its implementation inside parents class i.e. class A.

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