In which of the following scenarios is the greatest amount of work accomplished?
1) A girl weighing 70 N goes up a flight of stairs that is 4.0 meters high carrying a box that weighs 2.0 N.
2) A girl weighing 55 N goes up a flight of stairs that is 2.5 meters high carrying a box that weighs 1.0 N.
3) A girl weighing 60 N goes up a flight of stairs that is 3.0 meters high carrying a box that weighs 1.5 N.
4) A girl weighing 80 N goes up a flight of stairs that is 5.0 meters high carrying a box that weighs 0.5 N.
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