What three scenarios has likely occurred?

A Scrum Team has requested a hardening Sprint to integrate the work produced in previous Sprints and test before releasing.

What three scenarios has likely occurred? (Choose three.)
A . The team’s Definition of Done is not being adhered to during every Sprint.
B . The team’s Definition of Done is weak or incomplete causing a build up of technical debt.
C . The Development Team is having difficulties with the ability to regularly release during a Sprint.
D . Hardening Sprints are supported by the Scrum framework so this is acceptable.
E . Scrum has been customized in a suitable manner to make the previous work releasable.

Answer: ABC

Explanation:

At the end of a Sprint, the new Increment must be ‘Done’, which means it must be in useable condition and meet the Scrum Team’s Definition of Done.