What are the purposes of the Definition of "Done"?

The Definition of "Done" ensures quality and clarity. TheScrum Guidestates: "The Definition of Done is a formal description of the state of the Increment when it meets the quality measures required for the product."

A:It ensures the Increment is usable/releasable: "In order to provide value, the Increment must be usable."

B:It provides transparency by setting a shared standard: "The Definition of Done creates transparency by providing everyone a shared understanding of what work was completed."

C:The Sprint Goal is separate, defined in Sprint Planning.