Which three statements about HSRP operation are true?（）

A. The virtual IP address and virtual MA+K44C address are active on the HSRP Master router.
B. The HSRP default timers are a 3 second hello interval and a 10 second dead interval.
C. HSRP supports only clear-text authentication.
D. The HSRP virtual IP address must be on a different subnet than the routers' interfaces on the same LA
E. The HSRP virtual IP address must be the same as one of the router's interface addresses on the LA
F. HSRP supports up to 255 groups per interface, enabling an administrative form of load balancing.