Which type of storage configuration should be used?

A customer wants to make its data available with a RPO of 10 minutes. Replication to the second data center will be done using the network.

Which type of storage configuration should be used?
A . NFS datastore on ESXi 6.0 with vSphere replication appliance 6.0
B . VMFS datastore on ESXi 6.0 with vSphere replication appliance 6.5
C . vSAN datastore on ESXi 6.0 with vSphere replication appliance 6.5
D . VMFS datastore on ESXi 6.0 with vSphere replication appliance 6.0

Answer: C

Explanation:

vSphere Replication 6.5 is supported on previous ESXi versions (such as 6.0). Only constraint is vCenter is running 6.5 as well (which can be assumed as it is not mentioned). vSphere Replication 6.5 release notes announce the 5 minute RPO (improved from 15 minutes previously) and specifically calls out the limitation of ESXi 6.0 only being supported for vSAN.