Question 1 of 5 . Ell placed a depreciable business asset into service four years ago, but has never claimed a depreciation deduction. To correct this error, Eli must: Amend the last four prior-year retums. Use the unadjusted basis of the asset as the basis for determining gain or loss when the asset is disposed of. File Form 3115. Application for Change in Accounting Method, and claim the depreciation on the current-year return. Begin depreciating the asset in the current year, as though it were placed in the current year