Why always this code will call the object parameter type overload not the int?

Question

Why the below code would call the public void Func(object o) even if i call it with int like so int i = 10;

Is it because all types derived from System.Object?

using System;
public class Program
{
    static void Main(string[] args)
    {
        Derived d = new Derived();
        object i = 10;
        d.Func(i);
        Console.ReadKey();
    }
}
public class Base
{
    public virtual void Func(int x)
    {
        Console.WriteLine("Base.Func(int)");
    }
}
public class Derived : Base
{
    public override void Func(int x)
    {
        Console.WriteLine("Derived.Func(int)");
    }
    public void Func(object o)
    {
        Console.WriteLine("Derived.Func(object)");
    }
}

please let me know why if it is correct.