Until the Mid-1800s, Most Peppered Moths in Great Britain Were

Until the mid-1800s, most peppered moths in Great Britain were white, while a few were dark. Why did these groups switch during the Industrial Revolution, when most of the peppered moth population evolved to have the darker coloration?

A) Pollutants covered the moths and made them appear darker.
B) Some moths were able to turn black and pass the color to their offspring.
C) The pollution created mutagens that caused a widespread mutation for darker coloration.
D) Dark moths were selected because their color was an advantage in the new environment.