Which of the Following Is TRUE Concerning Generalization/specialization Hierarchies

Multiple Choice

Which of the following is TRUE concerning generalization/specialization hierarchies?

A) They show a hierarchy of classes representing a collection of parts.
B) They show a hierarchy of classes and subclasses that lead from the general to the specific.
C) They might be defined as a "contains" relationship.
D) They might be defined as a "includes" relationship.