Answer:
The correct answer is option a. menu costs.
Explanation:
In economics we use the term menu costs to talk about the cost caused by companies by changing prices.
As we see in the example, having to constantly change prices in a company will generate expenses, printing new prices and menus, expenses to update the price lists, possible losses in sales due to customer dissatisfaction, etc.
When you do all this, there may be a loss in sales and that is exactly what the menu costs refers to.
Given this information we can say that the correct answer is option A.