The relative risk of a vehicle crash at a BAC of 0.10 percent than a BAC of 0.00 is 5 times higher for the driver will have a difficulty staying in line and having trouble stepping on the brake when needed.
I think this question is meant to be placed in the Geometry category. :)
The correct answer is true
It's a Sextant
here is a photo of it with full indications
Hope this Helps :)