Kevin Wants to Try to Persuade Bubbles to Do Something

Kevin wants to try to persuade Bubbles to do something but is not sure it's possible because Bubbles is so authoritarian. Based on what you know from the text, which type of influence tactic would work best on Bubbles?

A) promise to reward Bubbles if he complies
B) hint that Bubbles should do whatever he is asked to do
C) threaten Bubbles by telling him that something bad will happen if he doesn't comply
D) tell Bubbles he'll be more likeable if he complies