abstract public class father
{
    abstract public void method();
}

class A:father
{
    override void method()
    {
        console.writeline("调用A");
    }
}

class B:father
{
    override void method()
    {
        console.writeline("调用B");
    }
}

class Program
    {
        static void Main(string[] args)
        {
            father f=new A();
            f.method();
            f=new B();
            f.method();
        }
    }

请问：当f=new B();时，原先的new A()它会不会自动销毁？