在C#中，已知下列代码的运行结果是“老虎吃动物”，请问在空白处1和空白处2,分别应该填写的代码是()public class Animal{public ___1____ void Eat(){Console.WriteLine("我要吃");}}public class Tiger : Animal{public ____2____ void Eat(){Console.WriteLine("老虎吃动物");}}public class Test{static void Main(){Animal an = new Tiger();an.Eat();}}