During the Sprint, the Development Team realizes they might not be able to finish all of the items in the Sprint Backlog.
What should happen?
A. Product Backlog items are either ‘done’ or ‘not done.’ This helps with transparency, reduces complexity and allows for improved empiricism.
B. Continue Sprinting until the work is complete and redefine a new Sprint time-box based on the results of the current Sprint.
C. The Sprint length holds and the Development Team continuously learns what is actually possible to do within the time-box.