using System;
using System.Collections.Generic;
using System.Linq;

class MyBaseClass {}
class DerivedClassOne : MyBaseClass {}
class DerivedClassTwo : MyBaseClass {}

public class Test
{
	public enum Option {
        Option1,
        Option2,
        Option3
    }
	private static Dictionary<Option, Func<MyBaseClass>> OptionMapping 
       = new Dictionary<Option, Func<MyBaseClass>> {
        { Option.Option1, () => new DerivedClassOne() },
        { Option.Option2, () => new DerivedClassTwo() },
        { Option.Option3, () => OptionMapping[Option.Option2]() }
    };
	public static void Main()
	{
		// your code goes here
	}
}