What does this code return ?

public class A {
public void talk() {
echo "Hello my name is A"
}
}

public class B extends A {
public void talk() {
echo "Hello my name is B"
}
}

B b = new B();
A a = b;
B b2 = (B) a;
b2.talk();

Question

What does this code return ?

public class A {
        public void talk() {
            echo "Hello my name is A"
        }
    }

public class B extends A {
        public void talk() {
            echo "Hello my name is B"
        }
    }

B b = new B():
    A a = b;
    B b2 = (B) a;
    b2.talk();

Accepted Answer

"Hello my name is B".

Answer

Execution error.

Answer

"Hello my name is A".

Answer

Compilation error.

Question from the Object-oriented programming - Fundamentals test