You create a custom workflow action named WF1 that copies the content of a document library to another document library.
WF1 is used in a Microsoft SharePoint Designer reusable workflow. You need to ensure that the workflow action is deployed as a sandboxed solution.
Where should you define the workflow action?
A. the Elements.xml file
B. the ReplicatorActivity activity
C. the SPPersistedObject object
D. the WF1.actions file
