If Product Backlog refinement is needed, when should the Product Backlog be refined and who should participate?
(choose the best two answers)
The Product Owner takes the time between the Sprints to do it.
The Scrum Team does it in the actual Sprint, if they have not been able to do it in preceding Sprints.
The Scrum Team in the preceding one or two sprints.
Business analysts in the organization should do this work for the Scrum Team 1-2 Sprints ahead of the development Sprints.
The Product Owner must do this as essential work in Sprint 0.