Identify which basic principle of accounting is best described in each item below.

(a ) Norfolk Southern Corporation reports revenue in its income statement when the performance obligation is satisfied instead of when the cash is collected.

(b) Y ahoo! recognizes depreciation expense for a machine over the 2-year period during which that machine helps the company earn revenue.

^{(c) Oracl e Corporatio n r eport s informatio n abou t pendin g lawsuit s i n th e note s t o it s financia l statements.}

^{(d) Eastman Kodak Company r eports land on its balance sheet at the amount paid to acqui r e it, even}

^{though the estimated fair value is g r eate r .}