HSRP has been configured between two Company devices. Which of the following describe reasons for deploying HSRP？ （）
- A HSRP provides redundancy and fault tolerance
- B HSRP allows one router to automatically assume the function of the second router if the second router fails
- C HSRP allows one router to automatically assume the function of the second router if the second router starts
- D HSRP provides redundancy and load balancing