Which rules apply?

You must design a high-availability SAP HANA database system with 8 hosts (6 worker and 2 standby) that also uses multitenant database containers .

Which rules apply? There are 2 correct answers to this question.
A . The system database must run on the standby host.
B . The system database instance must run on all hosts (worker and standby).
C . The tenant databases must be able to be scaled out to all hosts (worker and standby).
D . The tenant databases must run on the worker hosts.

Answer: B,D