High availability is a key design consideration in the enterprise campus network. In a fully redundant topology, which is likely to provide faster IGP convergence during a failure?

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High availability is a key design consideration in the enterprise campus network. In a fully redundant topology, which is likely to provide faster IGP convergence during a failure?
A . redundant supervisors
B . redundant supervisors with Cisco Nonstop Forwarding (NSF) and Stateful Switchover (SSO)
C . single supervisors with tuned IGP timers
D . single supervisors

Answer: C