Which of the following must you implement for high availability in an SAP HANA production system? (Choose three.)

Which of the following must you implement for high availability in an SAP HANA production system? (Choose three.)
A . A name server on one active node
B . Index server processes on all nodes
C . Shared file system for all nodes
D . A statistics server on one active node
E . Data replication to the standby nodes

Answer: BCD