Determine output,draw refrence values and objects

public class A public void foo (Object o) f System.out printin"A") public class B public void foo (String o) f System.out.println"B"): public class C extends A public void foo (String s) &System.out.println"C"); public class D extends B public void foo (Object o) System.out.println"D"); public class PolymorDemo public static void main(Stringl ] args) A a new C); a.foo("Java"); CC newE(); c.foo(''Java"); B b new D): b.foo("Java"); D d new D); d.foo("Java")