Inconsistent availability: the base class is less accessible than the class

I have the code below and I'm trying to do some inheritance, but when I try to run this code, it gives me an error:

Inconsistent Accessability: Base Class is less accessible than class

The code:

class Program
{
    static void Main()
    {

        FoodProducts Test = new FoodProducts();

        Test.Limit();



    }
}

public class FoodProducts : Products
{
    public void FoodProduct()
    {
        Console.WriteLine("This is food product");
    }

    public void Limit()
    {
        Console.WriteLine("This is an Attribute of a Product");
    }

}

Can anyone help me?