The fitness for a particular species of South American bats is
determined by a single gene locus with two segregating alleles, (A)
and (a), that determines echo-location ability. The dominant allele
A causes normal echo-location, whereas the recessive allele a
impairs echo-location ability. In the large bat population that you
are studying, you determine initial frequencies of the A and a
alleles to be 0.7 (p) and 0.3 (q), respectively. If the genotypes
are in Hardy–Weinberg equilibrium on fertilization, and the fitness
of aa bats relative to AA and Aa bats is 0.6, what will the
frequency of the A allele be after one generation?

A) 0.755

B) 0.805

C) 0.725

D) 0.495

E) 0.905

F) 0.255