Which One of the Following Statements About Preservation of the Illinois

Which one of the following statements about preservation of the Illinois prairie chicken is false?

A) Co-option of habitat for agriculture was the major reason for the disappearance of the prairie chicken in Illinois.
B) By allowing a different species (the lesser prairie chicken) to interbreed with the Illinois prairie chicken,its genetic variability was enhanced and its reproductive rates returned to normal.
C) The sanctuaries set up to preserve the Illinois prairie chickens were not successful because of low population sizes and the bird's mating system.
D) Egg hatching rates in the Illinois sanctuaries continued to fall.
E) Greater prairie chicken populations in other states were more genetically diversE.