How to calculate blood alcohol level<br>Understand what blood alcohol content (bac) means. Blood alcohol content is a measurement of the amount of alcohol in your body. So, a bac of 0.10% means 1 part alcohol for every 1000 parts of blood.

Based on that paragraph can we conclude that this sentence is true?
alcohol content in the blood happens when you drink.

OPTIONS:
(a). Yes
(b). It's impossible to say
(c). No
(b).