How would the results of this study have been different, if factories produced white or light gray ash and soot rather than black?
(A) There would be no change to the results of the experiment.
(B) There would been added selection pressure for more white-bodied spotted moths and against black-bodied spotted moths.
(C) There would been added selection pressure for more black-bodied spotted moths and against white-bodied spotted moths.
(D) There would have been an increase in the frequency of both black-bodied and white-bodied spotted moths.