Regarding high availability, with the MAC address 0000.0c07.ac03, what does the "03" represent?

A.
The GLBP group number

B.
The type of encapsulation

C.
The HSRP router number

D.
The VRRP group number

E.
The HSRP group number

F.
The active router number

Explanation:

Each router keeps a unique MAC address for its interface. This MAC address is always associated with the unique IP address configured on the interface. For the virtual router address, HSRP defines a special MAC address of the form 0000.0c07.acxx, where xx represents the HSRP group number as a two-digit hex value. For example, HSRP Group 1 appears as 0000.0c07.ac01, HSRP Group 16 appears as 0000.0c07.ac10.