Adequacy decision. Correct. The ruling is an adequacy decision regarding processing in third countries. (Literature: A, Chapter 7; GDPR Article 45 and Recitals (104) and (106)

Derogation. Incorrect. A derogation is for specific situations where a transfer is necessary, but there is no ruling permitting it. (Literature: GDPR Article 49(1)(q))

Legally binding contract. Incorrect. The ruling is an adequacy decision. A legally binding contract is between a processor and a controller.

Treaty superseding the GDPR. Incorrect. The ruling is an adequacy decision. It does not supersede the GDPR.