How should the height of the headrest be properly adjusted?

A)According to the driver's comfort.
B)The edge must be positioned between the bottom of the head and eye level.
C)The edge must be positioned between the top of the head and eye level.Correct
The headrest is an important passive safety element that can significantly reduce the likelihood of suffering cervical injuries. Its proper adjustment is vital, both in the front and rear seats:
- The upper edge of the headrest must be positioned between the top of the head and eye level.
- There should be no gap between the driver's head and the headrest, or it should be as small as possible, never exceeding 4 cm.