Choose the statements that describe Bootstrap Router mechanism. (Choose three)

A. It is a mechanism to distribute RP-set information dynamically

B. The bootstrap router gets and propagates RP information via multicast messages

C. The bootstrap router gets and propagates RP information via unicast and multicast messages

D. BSR relies on timers to discover that an RP-Candidate router is no longer available

E. For BSR to work, every router in the multicast network should be configured as BSR candidate