Which modification of the following code WILL NOT make the output be "success" ?

Question

Which modification of the following code WILL NOT make the output be "success" ?
   
    class A {
        public void talk() {
            echo "success"
        }
    }

class B extends A {
        public void talk() {
            echo "fail"
        }
    }

A a = new B();
    a.talk();

Accepted Answer

Declare a with : B a = new A();

Answer

Give private visibility to the method talk in B.

Answer

Delete the method talk in B.

Answer

Declare a with : A a = new A();

Question from the Object-oriented programming - Fundamentals test

Which modification of the following code WILL NOT make the output be "success" ?