Often People Who Drink Too Much Alcohol Attempt to "Sober

Often people who drink too much alcohol attempt to "sober up" by drinking coffee.Several studies support the idea that caffeine

A) blocks alcohol's effect at GABA receptors.
B) lowers BAC by increasing urine output.
C) improves coordination and speed of reaction after drinking alcohol.
D) is likely to lead to increased arousal,but the drinker is still impaired.