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

class box
{
    public  int width;
    public int height;
    public int length;
    public  int volume1;
    public void volume()
    {
        volume1 = width * height * length;
    }
    public void volume(int x)
    {
        volume1 = x;
    }
}    
class Program
{
    static void Main(string[] args)
    {
        box obj = new box();
        obj.height = 1;
        obj.length = 5;
        obj.width = 5;
        obj.volume(5);
        Console.WriteLine(obj.volume1);        
        Console.ReadLine();
    }
}
a) 0

A. 0

B. 5

C. 25

D. 26

Answer: Option B