Which replication method and data center technology should be used?

An architect receives a business requirement from a CTO that states the RTO and RPO for a new system should be as close as possible to zero.

Which replication method and data center technology should be used?
A . asynchronous replication over dual data centers via DWDM
B. synchronous replication over geographically dispersed dual data centers via MPLS
C. synchronous replication over dual data centers via Metro Ethernet
D. asynchronous replication over geographically dispersed dual data centers via CWDM

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Answer: C