A release has been planned with 5 sprints. The team, for the sake of convenience, has decided to keep the sprint duration open. Depending on how much they commit and achieve, they decide to wrap up the sprint at an appropriate time. Which of the following is CORRECT in this given context ? Select one: O a. This is the best case for a self-organized team O b. This will not work for certain technologies O c. Estimating the velocity would be difficult in such a scenario d. This helps the team to perform at their convenience