An individual weighing 120 pounds consumed one standard alcoholic beverage 30 minutes ago. Which statement best explains why driving right away would be unwise?

• A. One standard drink can raise blood alcohol concentration to levels known to impair coordination and reaction time within 30 minutes.
• B. One standard drink will always result in a BAC under 0.02% for people under 140 lb, so any impairment is negligible.
• C.  Alcohol must be present for at least 2 hours before it causes any measurable impairment, so 30 minutes is too soon to worry.
• D. Eating food after the drink makes BAC zero immediately, so driving is safe after eating.