Which set of configurations resolves the issue?

Refer to the exhibit.

An engineer has successfully set up a floating static route from the BRANCH router to the HQ network using HQ_R1 as the primary default gateway. When the g0/0 goes down on HQ_R1, the branch network cannot reach the HQ network 192.168.20.0/24.

Which set of configurations resolves the issue?
A . BRANCH(config)# ip sla 1
BRANCH(config-ip-sla)# icmp-echo 192.168.100.2
B . BRANCH(config)# ip sla 1
BRANCH(config-ip-sla)# icmp-echo 192.168.100.1
C . HQ_R3(config)# ip sla responder
HQ_R3(config)# ip sla responder icmp-echo 172.16.35.5
D . HQ_R3(config)# ip sla responder
HQ_R3(config)# ip sla responder icmp-echo 172.16.35.1

View Answer

Answer: B