Which prerequisites of the primary system and the secondary system are mandatory before you can activate the SAP HANA system replication with the read-enabled mode? Note: There are 2 correct answers.

Which prerequisites of the primary system and the secondary system are mandatory before you can activate the SAP HANA system replication with the read-enabled mode? Note: There are 2 correct answers.
A . The same number of active hosts and standby hosts must be installed
B . Both must have the same SAP HANA version
C . An explicit read-only connection between both systems must be available
D . The CPU architecture must be identical

Answer: B,C