What are three benefits of GLBP?（）

• A、GLBP supports up to eight virtual forwarders per GLBP group
• B、GLBP supports clear text and MD5 password authentication between GLBP group members
• C、GLBP is an open source standardized protocol that can be used with multiple vendors
• D、GLBP supports up to 1024 virtual routers
• E、GLBP can load share traffic across a maximum of four routers
• F、GLBP elects two AVGs and two standby AVGs for redundancy