Why is de-coupling your extensions from SAP S/4HANA Cloud required? Note: There are 2 correct answers to this question.

Why is de-coupling your extensions from SAP S/4HANA Cloud required? Note: There are 2 correct answers to this question.
A . To enhance existing functionality within the application itself
B. To ensure extensions do not conflict with SAP software updates
C. To guarantee the stability of the system
D. To allow customers to take advantage of predefined user exits

Answer: B,C