Two pallets have the same mass. One is dense steel; the other is a tall stack of empty crates. Which loading decision follows Goals 1.4 and 1.6?

1. Place the tall stack on the top deck or against the roof because mass is equal
2. Put both on the extreme rear overhang to help traction
3. Mass equality means distribution can be ignored
4. Keep the taller, bulkier load as low as volume allows, because equal mass at a greater height raises the centre of gravity and rollover risk