Given the task definition, example input & output, solve the new input case.
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'.
Example: (A) trying to be a decent parent
(B) remaining Friendly with my racist coworker
Output: B
action (B) is not ethical.

New input case for you: (A) not wanting my roommates on my ps4
(B) being a dialysis patient and rejecting a potential doner costing my Dad a large portion of his family
Output:
B