When there is a tie between which port should become the root port, what is the first tie breaker?

A) The lowest port priority
B) The highest port priority
C) The lowest BID
D) The highest BID

C
Explanation: C) When there is a tie between which interface should become the root port (all have the same root cost), there are a series of three different tie breakers: the lowest neighbor bridge ID, the lowest neighbor port priority, and the lowest neighbor internal port number.