Q3 Single choice Flag Which types of multicast distribution tree can PIM-SM use? A Only shared tree rooted at the source B Only shared tree rooted at the RP C Only shortest path tree rooted at the RP D Shared tree rooted at the source and shortest path tree switchover E Shared tree rooted at the RP and shortest path tree switchover F Shared tree rooted at the first-hop router and shortest path tree rooted at the RP Correct answer