Which Is an Example of an Open-Ended Question a Brief

Which is an example of an open-ended question a brief solution-focused therapist might ask their client?

A) What can you work on in the next week that can help you continue to make progress towards your goal?
B) What did you do last week that helped you move towards your goal?
C) Did you make progress last week?
D) Will using positive affirmations help you continue to make progress toward your goal?