Managerial accounting

Hi, I am studying the Managerial accounting as a part of MBA, my question is

” Use a selected company or your current work environment to identify at least one cost or expense that would fit under each of the following categories:

Variable, Fixed, Mixed, Step

Would your company be more likely to benefit from using a manufacturing cost hierarchy or a customer cost hierarchy for determining cost drivers? Explain your answer and identify one cost for each of the four cost hierarchy categories. “