National TIBER implementations (TIBER-NL, TIBER-DE, TIBER-BE, TIBER-ES, and others) are built on the common TIBER-EU framework, adopting its core phases, roles and methodology while adding jurisdiction-specific detail - such as local legal considerations, national authority contact points, and administrative processes. They are not independent, unrelated schemes (D), TIBER-EU is designed for adoption across multiple member states, not confined to one (C), and national guides tailor rather than wholesale replace the framework's core structure (B).