$.$ A network administrator is troubleshooting routing issues in a network where

Router A and Router B are neighbors using RIP. Router A suddenly detects that its

link to Router B is down due to a cable failure. What will Router A do next based on

the RIP protocol? What action will Router A most likely take upon detecting the link

failure?

A$)$ Increment the metric for all routes learned from Router B and broadcast

updates.

B$)$ Broadcast a triggered update to all neighbors, including Router B$.$

C$)$ Send a poison reverse update to Router B indicating the failed link.

D$)$ Wait for the next regular update interval to inform Router B of the link failure.