An analyst has gathered the following information about a company's capital assets: ($ million) Year ending 2012 2011 Property, plant and $4,750 $4,750 equipment Accumulated depreciation $575 $420 Net book value $4,175 $4,330 As of the end of 2012, the expected remaining life of the assets, in years, is closest to: Select one: A. 24 years B. 31 years . C. 27 years. D. 8 years. E. 7 years