What will be the output of the following C# code?

What will be the output of the following C# code?

using System;
using System.IO;

class Program {
    static void Main() {
        using (var fs = new FileStream("test.txt", FileMode.Create)) {
            byte[] data = {72, 105};
            fs.Write(data, 0, data.Length);
        }
        using (var fs = new FileStream("test.txt", FileMode.Open)) {
            byte[] buffer = new byte[2];
            fs.Read(buffer, 0, buffer.Length);
            Console.WriteLine(System.Text.Encoding.ASCII.GetString(buffer));
        }
    }
}