A. VRRP communication occurs every second by default.
B. VRRP communication is confined to the local subnet for which VRRP is configured.
C. VRRP communication uses broadcast until the group is established at which point it uses unicast.
D. VRRP communication occurs as needed and there is no set interval for communication between VRRP routers.
E. VRRP communication between VRRP routers occurs only if the VRRP group identifier and authentication parameters match on both ends.