A Large International Organization Currently Has a Single Support Desk

A large international organization currently has a single support desk that operates 24 hours per day, 7 days per week. However, they have realized that for disaster planning purposes, it would be a good idea to have multiple support desks in different locations so that if one went down the others could take over for it. Normal operations, though, would mean that they didn't have to staff any of the operations overnight. Which of the following has the company decided to use as the new model for their support desk?

A) Centralized
B) FTS
C) Unified
D) Streamlined