What is an accurate statement about a continuous data protection (CDP) remote replication solution?

What is an accurate statement about a continuous data protection (CDP) remote replication solution?
A . Write splitter is only implemented at the compute system running on the remote site
B . Appliances are present at both the source and remote sites
C . Replica and journal volume should be of the same size
D . Journal and production volumes must be of the same size

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Answer: B