If the result of the breathalyser tests is positive, the officer may immobilise the vehicle, unless...

A)the driver pays the financial penalty imposed on the spot.
B)children or elderly people are travelling in the vehicle.
C)another duly authorised person can take over the driving.Correct
In the event that the result of the tests and analyses, where applicable, is positive, the Officer may proceed to the immediate immobilisation of the vehicle, unless another duly authorised person can take over the driving.