Which requirement(s) concerning the driver restraint harness is true?

1. If belt passes through a firefall, the edges must be sealed by a grommet and it has to be protected against chafing.
2. The shoulder belt must alayws be 50mm wide.
3. The distance between the shoulder harness straps must be between 105 mm and 155 mm, measured at the mounting points.
4. Bolh lap belts must be releasable by only one release mechanism.Correct
5. Each and every belt must be fastened to an attachment point that is able to withstand a load of at least 13 kN.