The owner's best friend is at the bar and is clearly intoxicated, but orders another drink. The bartender is afraid to deny service because the guest and the owner may get angry, but is also afraid to continue service for fear of getting in trouble. What should the bartender do?

A) Serve the guest another drink but make sure the guest eats plenty of high-fat food.
B) Serve the guest more alcohol but in between glasses of water.
C) Serve the guest mixed drinks but only use half of the alcohol.
D) Do not serve the guest regardless of who he or she knows.