What will be the output of the following C# code?
class box
{
public int volume;
int width;
int height;
int length;
public box ( int w, int h, int l)
{
width = w;
height = h;
length = l;
}
public ~box()
{
volume = width * length * height;
}
}
class Program
{
static void Main(string[] args)
{
box b = new box(4, 5, 9);
Console.WriteLine(b.volume);
Console.ReadLine();
}
}
a) 0
b) 180
c) Compile time error
d) None of the mentioned

Answer: c
Explanation: We cannot use any kind of modifier with destructor.