Your friend Taylor works producing dress shirts and dress pants. Currently Taylor can work a maximum of 8 hours per day. With the equipment Taylor has, and the current level of expertise, Taylor can finish either 10 shirts or 20 pairs of pants in an hour. This is true when Taylor is performing at full capacity. Meaning doing the best possible work.

What is the opportunity cost of making one shirt (in terms of the amount of pants Taylor won't be able to make)?