You need to decide on the best router redundancy protocol to use in the Company network.  Which  two statements are true about HSRP， VRRP， and GLBP？（）

• A、 GLBP and VRRP allow for MD5 authentication， whereas HSRP does not.
• B、 HSRP allows for multiple upstream active links being simultaneously used， whereas GLBP  does not.
• C、 GLBP allows for router load balancing of traffic from a network segment without the different  host IP configurations required to achieve the same results with HSRP.
• D、 Unlike HSRP and VRRP， GLBP allows automatic selection and simultaneous use of multiple  available gateways.
• E、 GLBP allows for router load balancing of traffic from a network segment by utilizing the creation  of multiple standby groups.