Explain why knowledge of cost behavior is important for managerial decision making. Explain a driver and give an example of a cost and its corresponding output measure or driver. Explain the difference between committed and discretionary fixed costs and give examples of each.must contain at least one citation from a source in support of your assertions, assumptions, opinions, or conclusions. This may be from your textbook, a source from the LIRN library, or another credible, i$.$e$.,$ academic source.