Overloading

Question

What is displayed, and why?

using System;

class Base
{
public virtual void Foo(int x)
{
Console.WriteLine ("Base.Foo(int)");
}
}

class Derived : Base
{
public override void Foo(int x)
{
Console.WriteLine ("Derived.Foo(int)");
}

public void Foo(object o)
{
Console.WriteLine ("Derived.Foo(object)");
}
}

class Test
{
static void Main()
{
Derived d = new Derived();
int i = 10;
d.Foo(i);
}

}