You work as the application developer at Cert-Tech.com. Cert-Tech.com uses Visual Studio.Net 2005 as its application development platform. You use a Windows XP Professional client computer named Client01 as your development computer. 
You are developing a .Net Framework 2.0 application on Client01. You write the code shown below：Public Class Shape 
Private shapeName as String 
Public Sub Shape（ByVal shapeName as String） Me.shapename=shapeName End Sub 
Public Overridable Fuction GetName（） As String Return shapeName End Function 
Private Sub DrawShape（） ’Additional code goes here End Sub End Class 
You later decide to have the application compiled and registered for COM interoperability. The other developers on your team complaing that they are unable to create an instance of the Shape class  in their COM applications. You are required to ensure that COM applications are able to create an instance of the Shape class. What should you do？（）

A.A
B.B
C.C
D.D