The answer is letter A.
Alcohol is not a stimulant but rather does the opposite. Alcohol actually causes a person to lose his/her inhibitions when intoxicated at high levels. It makes a person feel calm and relaxed rather than hyperactive and energetic. This is the reason why many car accidents that occur in the road are a result of alcohol intoxication. When the body is already relaxed and calm, decisions and judgments are not as snappy as a non-intoxicated individual.