The 2017 financial statements of Lowell Inc. include the following footnote: Note 4. Property and Equipment 2017 2016 Gross PPE 1,000 1,000 Less accumulated depreciation (382 ) (290 ) Net PPE $ 618 $710 Depreciation expense $ 92 $ 90 The average useful life of Willamette's depreciable assets at the end of fiscal 2017 is: A. 10.98 years B. 11.4 years C. 12.9 years D. 11.5 years E. None of the above