Four routers are running IS-IS and have established adjacency relationships. The area numbers and router levels are marked as shown in the figure. If route penetration is configured on the R3 device, what is the cost value from R4 to 0.0.2.2/32?

Four routers are running IS-IS and have established adjacency relationships. The area numbers and router levels are marked as shown in the figure. If route penetration is configured on the R3 device, what is the cost value from R4 to 0.0.2.2/32?

A . 40
B . 50
C . 80
D . 30

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Answer: B