已知接口IHello和类Base、MyClass的定义如下:interfaceIHello{voidHello();}classBase:IHello{publicvoidHello(){Console.WriteLine("HelloinBase!");}}classDerived:Base{publicvoidHello(){Console.WriteLine("HelloinDerived!");}}则下列语句在控制台中的输出结果为()IHellox=newDerived();x.Hello();