Having just completed endodontic treatment on a maxillary central incisor, you are preparing the canal for a post when you inadvertently perforate the labial surface of the root. You would

cement the post, then raise a flap and seal the defect surgically with amalgam.

extract the tooth.

cement the post using zinc- oxyphosphate cement.

re-prepare the canal so the post is now totally within the canal and cement the post.