Annex B is and remains an informative Annex to the EPB standard. The National Annex can be annexed to the national implementation of the EPB standard or published as separate document see FAQ “Are all …. publicly available?”). So, an EPB standard will have Annex B with default European choices and might also have an Annex NA with the national choices.
The same situation in case the national choices are laid down in a National Datasheet: Annex B says where it is. It is part of the standard.
2020-03-03