Consider this situation: We want to create classes to model coordinates in 2D space and 3D space. For example, a 3D coordinate object will represent a single point in 3D space, and collections of these points can form a shape or function. These classes will be reused in a variety of mathematical programs, some of which will require 2D coordinate objects and others which require 3D coordinate objects. We will not be making graphs of any other dimensions. We decide that the 3D coordinate class should inherit its functionality from the 2D coordinate class. Based on the description for how it will be used, should the 2D coordinate class be a concrete class, abstract class, or interface? O Interface Concrete class O Abstract class

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