A class in model X has a directed association to a class in model Y. Model X is checked out and
the directed association is modified to point to a class in model Z. Model X is then checked in.

Which statement is true?

A.
Model Z will show a new reference from model X.

B.
Model Y will show a deleted reference from model X.

C.
When compared to its previous version, model file X will show no differences.

D.
When compared to its previous version, model file X will show a difference against the external
reference since it now points to a new object.