Answer:
If you are under 21, the zero tolerance policy for drinking and driving will revoke your license even if your BAC is as low as 0.01%
Explanation:
When law enforcement officers pull over underage drivers (21 or under) and administer the breathalyzer test getting a positive result; those drivers will be convicted for a DUI with a BAC as low as 0.01%.
The drivers will also get their licenses immediately revoked.