The following information was extracted from the accounting records of the City of Charlottetown, PEI: Average assets increased by Variable costs increased by $101100 $50600 How much is the current year's return on investment? O No change between years. O Less than the prior year's due to both the change in assets and variable costs. O Less than the prior year's due to the change in variable costs. O Less than the prior year's due to the change in average assets.