What is an advantage of anycast HSRP as compared to HSRPv2?

Cisco FabricPath is implemented in a data center. You plan to implement anycast HSRP.

What is an advantage of anycast HSRP as compared to HSRPv2?
A . Up to four HSRP gateways can forward traffic simultaneously.
B . HSRP gateways use BFD for faster failure detection.
C . An HSRP group can be secured by using MD5.
D . Up to six HSRP gateways can forward traffic simultaneously.

Answer: C

Explanation:

Reference: http://packetpushers.net/anycast-hsrp-design-considerations/