During the Industrialization of England,a Species of Moth Developed What

During the industrialization of England,a species of moth developed what is known as industrial melanism.What does this term refer to?

A) It is a phenomenon where a species rapidly changes colors in response to the environment
B) It is a phenomenon where a black or blackish form of a species reaches a high frequency in a population due to soot pollution from industrialism
C) The phenomenon illustrates that species that are dark in color are being selected against in an industrial area
D) None of the above