The modifier used to define a class which does not have objects of its own but acts as a base class for its subclass is?

A. A blueprint for creating objects B. A method in C# C. A variable in C# D. A data type in C#

A. create B. instance C. object D. new

A. A method in C# B. A variable in C# C. An instance of a class D. A data type in C#

A. public B. private C. protected D. internal