If a DR needs to be elected between multicast routers running PIM-SM to be responsible for the sending and receiving of source or member multicast data, which one is described correctly below for the DR election rule?

If a DR needs to be elected between multicast routers running PIM-SM to be responsible for the sending and receiving of source or member multicast data, which one is described correctly below for the DR election rule?
A . PIM routers with long interface masks are elected dr.
B. Compare the DR priority first; With the same priority, you need to compare the interface IP addresses of the PIM routers to elect dr
C. PIM routers with small IP addresses are elected DR. PIM routers with low
D. DR priority values are elected DR.

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Answer: B