A breathalyzer reports a blood alcohol content (BAC) of 0.05%. Which interpretation is most accurate?

• A. The blood contains 0.05% alcohol by volume; the value lies on a continuous scale where higher values indicate greater physiological effects and risk.
• B. It denotes the percentage of alcohol in the liver tissue specifically and cannot be compared to values obtained from blood or breath tests.
• C. This value means the person has consumed 0.05 grams of alcohol in total in the last hour, which is below measurable risk and irrelevant clinically.
• D. A BAC of 0.05% is equivalent to being completely sober and indicates no central nervous system effects whatsoever.

Answer: (A)