Net Book Value Produces a Misleading Increase in Return on Investment

Net book value produces a misleading increase in return on investment because:

A) investment centres with old assets will show a higher return on investment than centres with new assets.
B) investment centres with old assets will show a lower return on investment than investment centres with new assets.
C) investment centres with old assets will show an equal return on investment centres with new assets.
D) book value reflects changing market values.