What happens if the Development Team cannot complete its work by the end of the Sprint?

A. The Sprint is extended and future Sprints use this new duration
B. The Sprint length holds and the Development Team continuously learns what is actually possible to do within a Sprint of this length
C. The Sprint is extended temporarily. Lessons are taken to ensure it doesn’t happen again

Correct Answer: B

Changing the length of the Sprint would create confusion and complexity, in this case its better to learn and adjust the number of stories the Development Teams takes into their Sprint.