Riddle Me This: Nuts, Bolts, Nuts & Bolts

The key to this riddle is the fact that all of the boxes are labeled incorrectly.

The way to correctly label all of the boxes with only one selection is to reach into the box labeled “Nuts & Bolts,” and pull something out. If you pull out a bolt, that box must be “Bolts,” and you now know that the remaining two boxes are “Nuts” and “Nuts & Bolts.” Because the “Nuts” box is labeled incorrectly it must be the “Nuts & Bolts” box, and the “Bolts” box is then “Nuts.”