Answer:
A) menu costs
Step-by-step explanation:
The problem with inflation, is that it is hard to keep up with it. From an employees point of view, wages are sticky and unless your salary is updated very frequently, you will end up losing purchasing power due to inflation. For businesses things are also difficult, because prices are also sticky. They are not as sticky as wages, but it also costs money to keep updating prices constantly and it also hurts sales.
This is exactly what menu costs refer to, the cost of constantly changing and updating prices.