In the 2020 ad, Sarah suggests that the ways to eat chocolate pie more delicious is to eat it in the military. According to Sarah's logic, if the choco pie is tastier in the military, even if it is the same choco pie, they are willing to pay a higher price for the choco pie sold in the military. If you pay the price p, let's say there is a security that pay p and get one choco pie in the next period. Explain the reason for the price of this security can be sold at different prices in the military by using