what is the output of the following C# code:

using system;

class Example

{ 

char[] xyz = { 'M' , 'N' , 'O' , 'P' };

public system.Collections.IEnumerator

GetEnumerator()

 {

foreach (char ch in xyz)

yeild return ch;

 } 

}

class program

{

static void main(string[] args)

 {

Example mc = new Example();

foreach (char ch in mc)

Console.Write(ch + " ");

 }

}