Under Argentine law, what is the legal consequence of refusing to undergo a breathalyzer test (control de alcoholemia) when requested by a traffic authority?

1. The officer must let the driver proceed if they exhibit no slurred speech
2. Refusal creates a legal presumption of intoxication, leading to immediate vehicle impoundment and administrative sanction
3. The driver is given a 24-hour grace period to report to a municipal hospital for a voluntary blood draw
4. The driver is only subject to a minor administrative parking citation