Routers R1 and R2 use HSRP so that one router will back up the other should there be a failure. Which two statements are true about the Hot Standby Router Protocol （HSRP）？ （）
- A Load sharing with HSRP is achieved by creating multiple subinterfaces on the HSRP routers.
- B Routers configured for HSRP can belong to multiple groups and multiple VLANs.
- C Load sharing with HSRP is achieved by creating HSRP groups on the HSRP routers.
- D All routers configured for HSRP load balancing must be configured with the same priority.
- E Routers configured for HSRP must belong to only one group per HSRP interface.