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

Which behavior can be expected when the HSRP versions is changed from 1 to 2?
A . Each HSRP group reinitializes because the virtual MAC address has changed.
B . No changes occur because version 1 and 2 use the same virtual MAC OU
D . Each HSRP group reinitializes because the multicast address has changed.
E . No changes occur because the standby router is upgraded before the active router.

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Answer: C