Final answer:
Management does not have to decide whether a simple average of the beginning and ending total liabilities should be used before calculating ROI and RI.
Step-by-step explanation:
The decision that management does not have to make before calculating ROI and RI is (C) Should a simple average of the beginning and ending total liabilities be used?
ROI stands for Return on Investment and RI stands for Residual Income. Both of these metrics are used to measure the profitability of a company. The decision to include nonproductive assets in the average total asset calculation, to use gross book value or net book value of assets, and to use a short term or long term focus are all factors that management should consider when calculating ROI and RI.