With no explanation, chose the best option from "A" or "B". Bob's coworker always plays their radio very loudly at the office making it difficult for Bob to do his work. Bob wants to talk to his coworker about their radio use.

A: Bob yells at his coworker to turn off their radio and threatens to make a complaint to the boss.
B: Bob explains that the radio is making work difficult for Bob and asks his coworker to turn it down or wear headphones.
B.