Refer to the exhibit. An engineer must design an automatic failover solution. The solution should allow HSRP to detect a WAN 1 failure and initiate an automatic failover, making router R2 the active HSRP router. Which two solutions should the engineer choose? (Choose two.)

A. implement IP SLA on router R1 B. implement PBR on router R1 C. implement Enhanced Object Tracking on router R1 D. use IP source routing E. use a floating static route