What is the meaning of the subsets constraint in the diagram?

A. D is a subclass of B.
B. D contains a subset of instances of C.
C. The collection of b is a subset of the collection of d for each A.
D. The collection of d is a subset of the collection of b for each C.
E. The collection of c is a subset of the collection of b for each D.
What is true of the black diamond on the diagram? (Choose two)

A. A Line Item cannot be removed from its Order.
B. A Line Item may only be included in one Order at a time.
C. If an Order is deleted, its Line Item instances normally still remain.
D. If an Order is deleted, its Line Item instances are normally deleted.
E. A Line Item may only be included in more than one Order at a time.
What is the notation for a provided interface?

A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
What does an activity contain?(Choose two)
A. edges
B. nodes
C. states
D. classes E. lifelines
F. messages
What is the difference between the <
A. <
B. <
C. <
D. <
What is true of an operation's postconditions? (Choose two)
A. may not be true if an exception is raised
B. must be true even if an exception is raised
C. defines what conditions must be true when the operation begins
D. defines what conditions must be true when the operation completes
E. defines what conditions must be true while the operation is executing
Let us denote sending of p as !p and receiving p as ?p. Which traces define the interaction M in the exhibit? (Choose two)

A.
B.
C.
D.
E.
What shapes normally represent a use case? (Choose three)

A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
F. Option F
What are metaclasses?
A. classes that are abstract
B. classes that have no supertypes
C. classes whose instances are objects
D. classes whose instances are classes
E. classes that are instances of classes
In the exhibit, which use case does NOT need to be available to meet the goals of an actor using Use Case D?

A. Use Case A
B. Use Case B
C. Use Case C
D. Use Case D
E. Use Case E