C#_delegate - combine function

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace Delegate
{
    public delegate void Myfunction();
 
    class Program
    {
 
        static void Main(string[] args)
        {
 
            Myfunction mf = MethodA;
            mf += MethodB;
            mf();
 
            Console.ReadLine();
 
        }
 
        public static void MethodA() {
            Console.WriteLine("A doing");
        }
        public static void MethodB()
        {
            Console.WriteLine("B doing");
        }
        public static void MethodC()
        {
            Console.WriteLine("C doing");
        }
    }
}