Just open up the box that may be labeled "Onions and Potatoes". Since none of the boxes are labeled the right way, this box need to contain only onions, or only poatatoes. If you take out a potatoe from this box, the box should be the "Potatoes Only" box. https://manuelqfgwf.tinyblogging.com/case-study-solution-fundamentals-explained-83260427