A customer is growing rapidly and expanding to new geographies. The current headquarters is located in London. They plan to create seven regional offices across France, Germany, and Luxembourg that are between 800 and 2,000 km apart from each other. Each regional office has a data center that will serve between four and six branch offices located between 30 and 200 km away.
At the close of business each evening, the customer shuts down their primary application and transmits new information to each regional office. The amount of new information sent from the headquarters office each night will be between 0.5 and 1.5 GB. Later each night, an application at the regional offices will read the data from the headquarters office and generate approximately 50 MB of new information appropriate to the branch offices.
What is the most costeffective solution that you could recommend for the customer?

A.
Use MirrorView/A and T1 network links between London and the regional offices. Afterward, use Incremental SAN Copy to distribute rate information to the branch offices using T1 network links.

B.
Use MirrorView/S and T3 networks for all data transfers between regional offices and London. Use MirrorView/A and T1 lines for transfers between regional and branch offices.

C.
Use OC3 network links between London and all regional and branch locations. Use MirrorView/S for data transfer to each office and create snapshots of the mirror for local processing.

D.
Use OC3 networks to transmit the same master copy of data from London to multiple regions using Incremental SAN Copy. At the regional offices, create a snap of the data received and transmit the changes to the branch offices using SAN Copy.