Refer to the topology below and answer the following question.
Why did Branch1 router lose WAN connectivity with R1 router?
Refer To The To 1 (24.48 KiB) Viewed 52 times
A. The IP address is misconfigured on PPP multilink interface on the Branch1 router
B. The PPP multilink group is misconfigured on the Branch1 serial interfaces
C. The PPP multilink group is misconfigured on the R1 serial interfaces
D. The Branch1 serial interfaces are placed in a shutdown condition
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