What is the correct way to adjust the head restraint in a vehicle?

1. ATo set it in the lowest possible position.
2. BThe upper edge of the restraint should be in line with the top of the driver's head.
3. CThe upper edge of the restraint should be in line with the lower line of the driver's nape.
4. DThe lower edge of the restraint should be in line with the top of the driver's head.

Pick an answer to test yourself