Please Write C# program and thank you:Tasks This lab has four parts:1. Write an abstract GeometricObject class.2. Implement the Comparable and Cloneable interfaces into the abstract class.3. Write an Octagon class that inherits from GeometricObject.4. Write a program that creates an Octagon, and clones and compares the original to the clone. Task 1 – The GeometricObject Abstract Class First, let us make a simple abstract class titled GeometricObject. A GeometricObject should include: a side length attribute and an area attribute, a ToString method that returns both of the class variables AND the name of the class (which should be GeometricObject). It SHOULD NOT include any type of constructor. The variables should be made protected, but the methods should be public.