As a Scrum Master of an Agile project team, what should you ensure to avoid any ambiguity towards the completion of User Stories?

Acceptance Criteria and Definition of Done is defined for each User Story by the Product Owner

Acceptance Criteria for each User Story and a common Definition of Done for all User Stories is defined by the Te the Project Owner

Acceptance Criteria is defined for each User Story and a common Definition of Done for all User Stories is define agreed by the Team and Product Owner

Acceptance Criteria is defined for each User Story and a common Definition of Done for all User Stories is define Team and signed off by Project Owner and Business Stakeholders