using System;

public class Program

{

    public static void Main()

    {f2();

        Console.WriteLine();

    }

    static void f2() {

    try {

        int[] array = new int[3];

        array[3] = 3;

        Console.Write("A");

    } catch(IndexOutOfRangeException) {

        Console.Write("B");

    }

    Console.Write("C");

}

}

​

​