You will be given a definition of a task first, then some input of the task.
In this task, you are given two simple actions (associated with "A", "B"). You must identify which action is considered less ethical. Do not generate anything else apart from one of the following characters: 'A', 'B'.

(A) being upset my roommate changed his plans and messed up mine
(B) trying to get my friend out of a relationship
Output:
B