Which approach best ensures that updates to clauses do not affect existing contracts while enabling changes for new contracts?

Which approach best ensures that updates to clauses do not affect existing contracts while enabling changes for new contracts?

• A. Replacing all active contracts automatically with the new clause version.
• B. Removing the old clauses from the system without migration.
• C. Rolling back to a previous template version.
• D. Maintaining historical clause versions, using dynamic clause resolution for new contracts, and preserving old ones for existing contracts.

Answer: (D)