In the Hardy-Weinberg Equation, the Term Q² Refers to the Frequency

In the Hardy-Weinberg equation, the term q² refers to the frequency of ____.

A) a recessive allele of a given locus
B) a homozygous recessive genotype at a given locus
C) all recessive alleles in a population
D) a heterozygous genotype at a given locus
E) a homozygous dominant genotype at a given locus