Cisco Exam Questions

What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree

What is the Cisco IOS default behavior for switching from the shared tree to the shortest path tree
in PIM-SM operations?

A.
immediately after receiving the first packet on the shared tree for a given (S, G)

B.
after receiving over 1 kb/s traffic on the shared tree for a given (S, G)

C.
10 seconds after receiving the first packet on the shared tree for a given (S, G)

D.
30 seconds after receiving the first packet on the shared tree for a given (S, G)

E.
after receiving over 10 kb/s traffic on the shared tree for a given (S, G)