What should you suggest to plan to a data redundancy strategy for the remote office storage groups?

You are a messaging professional. Your company uses a Microsoft Exchange Server 2007 messaging system.

The company plans to open 12 remote offices over the next six months. Each remote office will be connected to the main office by a 128 kbps WAN connection. The WAN connections will be heavily utilized.

Each remote office will have fewer than 30 users. However, the remote office users will heavily use the e-mail system.

Based on these factors, the company decides to deploy one Exchange Server 2007 computer in each office.

The company further decides that the cost of deploying additional Exchange Server computers in each remote office is not justified.

The company requires that mailbox services are not disrupted by a data-level failure.

You need to plan to a data redundancy strategy for the remote office storage groups.

What should you suggest to plan to a data redundancy strategy for the remote office storage groups?

A.
Implement RAID 10 volumes for the remote office storage groups.

B.
Implement Single Copy Clustering for the remote office storage groups.

C.
Implement Clustered Continuous Replication for the remote office storage groups.

D.
Implement Local Continuous Replication for the remote office Mailbox storage groups.