D and d can be interconverted by mutation and the frequency of the D allele in the population is $0\mathrm{.}6.$ D mutates to d at a rate of $)3\mathrm{.}0$ x $10-6,$ and d mutates to D at a rate of $()2\mathrm{.}0$ x $10-7.$ A$.$ What will be the frequency of the D allele in the next generation? B$.$ What will be the frequencies of D and d at mutational equilibrium, assuming no selective difference, no migration, and no genetic drift?