Which behavior can be expected when the HSRP version is changed from 1 to 2?

A.	No changes occur because the standby router is upgraded before the active router.
B.	No changes occur because version 1 and 2 use the same virtual MAC OUI.
C.	Each HSRP group reinitializes because the virtual MAC address has changed.
D.	Each HSRP group reinitializes because the multicast address has changed.