When can a Sprint be cancelled?

When can a Sprint be cancelled?
A . When the Sprint Goal becomes obsolete.
B. When the Developers are asking the Product Owner to do it.
C. When the Business Analyst is asking the Product Owner to do it.
D. When the Sprint Goal becomes obsolete and no items are "Done" yet.

Answer: A

Explanation:

There is no "Business Analyst" role in Scrum.

When the Sprint Goal becomes obsolete – the Sprint can be cancelled. It is no precondition that the items must not yet be "Done".