Possible ways to have cross and full edges in a mincut maxflow
This is the previous question which defines the terms. I hope this helps you solve the question.



Thus question provides these as true:


always full and always crossing. 
always full and sometimes crossing.


We know from the definitions I've provided that the following are also true:


sometimes full and never crossing
never full and never crossing


This is all. The answer is included in the definitions.