About the OSPF calculating the shortest path tree phase, which of the following description is true?

About the OSPF calculating the shortest path tree phase, which of the following description is true?
A . Stub network segment is calculated in the first stage, router node and transit network segment are calculated in the second stage
B . The routing node and Transiti network segment are calculated in the first stage, Stub network segment is calculated in the second stage
C . The Stub segment is calculated in the first stage, the routing node is calculated in the second stage
D . The routing node is calculated in the first stage, the stub network segment is calculated in the second stage

View Answer

Answer: B