The Survivorship of Individuals from Three Different Populations of a Beetle

Multiple Choice

The survivorship of individuals from three different populations of a beetle species has been assayed and is presented in the table. TT, TC, and CC represent genotypes at a locus that affects survival.Assuming that genotypes at this locus have no other effects on fitness, in which population(s) would we expect variation to be maintained by selection?

A) Only population A
B) Only population B
C) Only population C
D) Both populations A and B
E) Both populations B and C