调用委托后，只打印了Method方法，为什么没有调用MethodA？？？

using System;

namespace ConsoleApp2
{
    class Class21
    {
        public delegate void MethodCall();
        public static event MethodCall MethodHandle;
        static void Main(string[] args)
        {
            MethodHandle += Method;
            MethodCall call = MethodHandle;
            MethodHandle += MethodA;

            call();

            Console.Read();
        }

        public static void Method()
        {
            Console.WriteLine("调用了Method");
        }

        public static void MethodA()
        {
            Console.WriteLine("调用了MethodA");
        }
    }
}

MethodCall call = MethodHandle;
其实是call拷贝了一份委托链，之后的更改和它无关
call();修改为MethodHandle();

或者把MethodHandle += MethodA;写在前面