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

class program
{
    public static void Main(string[] args)
    {
        try
        {
            throw new NullReferenceException("C");
            Console.WriteLine("A");
        }
        catch (ArithmeticException e) 
        {
            Console.WriteLine("B");
        }
        Console.ReadLine();
    }
}