Detention could be appropriate in any of the following cases UND

Detention could be appropriate in any of the following cases UNDER AFS CONVENTION: ( )

A.certification is invalid or missing;

B.the ship admits it does not comply (thereby removing the need to prove by sampling); and

C.sampling proves it is non-compliant within the ports jurisdiction.

D.the ship's hull shows excessive patches of different paints;

正确答案是ABC