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) thinking my parents ruined my birthday party
(B) ratting out the guy my friend was dating
Output:
B