Which of the following will help you avoid modification of standard functionality in SAP S/4HANA cloud single edition? There are 3 answers to this question.

Which of the following will help you avoid modification of standard functionality in SAP S/4HANA cloud single edition? There are 3 answers to this question.
A . The 5 golden rules
B . The side-by-side extensibility option (such as SAP cloud platform)
C . A developer key
D . Contract restrictions in SAP HANA enterprise cloud and SAP S/4HANA cloud single tenant edition

Answer: A,B,D