Refer to the exhibit. Which configuration must be applied to the HQ router to set up a GRE tunnel between the HQ and BR routers?
A. value that identifies a specific tunnel within the Cisco SD-WAN overlay
B. identifier that represents a specific service offered by nodes within the Cisco SD-WAN overlay
C. attribute that acts as a next hop for network prefixes
D. component set by the administrator to differentiate similar nodes that offer a common service
Correct Answer: C