You create a Microsoft Office SharePoint Server 2007 site that contains a document library named Reports. You create a Web Part that displays an audit trail for each document in the Reports library. You need to audit the dates and types of each document that was printed by a specific user. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A.
Implement the IRouter interface.

B.
Implement the IPolicyFeature interface.

C.
Implement the IProfileEventInterface interface.

D.
Install a valid Policy Feature Definition into the Policy Feature Definition list.

E.
Install a valid Policy Resource Definition into the Policy Feature Definition list.