A.has traces of events following the sequence of messages

B.in a sequence diagram, are horizontal or with a slight downward slope

C.represent a sequence of operation calls

D.represent an individual participant in the interaction

A.The public contents of a package are not accessible outside the package.

B.If a package is removed from a model, the owned contents are removed.

C.The public contents of a package are accessible outside the package.

D.A class may be owned by multiple packages.

E.An element may be owned by at most one package.

F.If a package is removed from a model, the owned contents are reassigned.

A.specifies how one element implements another element

B.signifies granting of access rights from the supplier model element to the client model element

C.signifies granting of access rights from the client model element to the supplier model element

D.requires another element for its full implementation or operation

E.defines communication between two model elements

A.the sending of r

B.the return of the reply from having performed the operation v

C.that the operation v is called

D.the execution of the behavior associated with the operation v on b

A.none

B.two

C.three

D.one