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
Example solution: B
Example explanation: action (B) is not ethical.

Problem: (A) calling out my best friends boyfriend
(B) not wanting to participate in my coworkers personal training session

Solution: A