If you request a scope which requires consent while using the 'client_credentials' flow:

If you request a scope which requires consent while using the ‘client_credentials’ flow:

If you request a scope which requires consent while using the ‘client_credentials’ flow:
A . The scope asked for is returned
B. A user auth prompt is returned. Because the user is not authenticated
C. An error is returned. Because as there is no user – no consent can be given

Answer: C