Recessive Mutations Are Subject to Natural Selection Only When They

Recessive mutations are subject to natural selection only when they are in the homozygous recessive genotype.What does this mean in terms of allele frequency?

A) Recessive mutations persist in a population at a frequency somewhat greater than mutation frequency.
B) Recessive mutations persist in a population at a frequency far less than the mutation frequency.
C) Recessive mutations persist in a population at a frequency equal to the mutation frequency.
D) The frequency of the mutant allele will ultimately approach 0 if there is no heterozygote advantage.
E) The frequency of the mutant allele will be unchanged because recessive mutations are in Hardy-Weinberg equilibrium.