Which customer requirement would cause the network architect to select switches with CLOS architecture?

A network architect is choosing core switches for an enterprise data center. One potential model has CLOS hardware architecture, and the other model has a cross-bar architecture.

Which customer requirement would cause the network architect to select switches with CLOS architecture?
A . The customer has a multi-tenant data center, which needs to use Virtual Routing and Forwarding (VRF) to segment the network
B . The customer needs a highly-available core, which is best delivered with Intelligent Resilient Framework (IRF)
C . The customer has relatively small data center and does not have the budget to invest in high performance
D . The customer is planning to scale bandwidth up to 40G/100G in the next several years

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Answer: C