The Scribners Purchased Property on Which They Subsequently Discovered There

The Scribners purchased property on which they subsequently discovered there was barium contamination that resulted from former land ownership by Jasco-Sun Steel. The Scribners were unable to sell their property, but the valuation for tax purposes remained the same following the barium discovery. Which of the following is correct?

A) Environmental contamination is not used in property valuation.
B) Environmental contamination is not used in property valuation when the landowner is not responsible.
C) Environmental contamination is a factor in valuation.
D) Environmental contamination affects the rate but not the valuation.