What Key Conclusion Did Riesch and Schlupp Draw from the Life

What key conclusion did Riesch and Schlupp draw from the life history data of the Atlantic mollies?

A) The populations are only able to survive and reproduce when in stressful environments of either darkness or H₂S.
B) More energy is invested in producing many more offspring when the populations live in environmentally stressful habitats.
C) The populations exposed to H₂S are able to use the toxic molecule for metabolic energy.
D) Genetic regulation in the species result in production of equal sizes of offspring whether exposed to stressful environments or not.
E) More energy is invested in producing larger offspring when the populations live in environmentally stressful habitats.