Required: 1. Use your spreadsheet to recalculate Depreciation Expense, Accumulated Depreciation, and the Book Value for Year 6 under each method. Note your revised values below. Revise your worksheet to reflect these updated assumptions and then answer the questions that follow. OriginalCostEstimatedResidualValueEstimatedUsefulYearsEstimatedUnits$110,400$27,600622,000 Actual Units: \begin{tabular}{lr} Year 1 & 2,200 \\ Year 2 & 3,960 \\ Year 3 & 4,840 \\ Year 4 & 5,280 \\ Year 5 & 4,400 \\ Year 6 & 3,520 \\ \hline \end{tabular}