With Independent Assortment, the Ratio of Genotypes in the F₂

With independent assortment, the ratio of genotypes in the F₂ generation of a cross between true-breeding strains (AA bb × aa BB) can be described as 1:2:1:2:4:2:1:2:1. To what genotypes do the "2s" in the ratio refer?

A) homozygous for both genes
B) heterozygous for both genes
C) homozygous for one gene, heterozygous for the other
D) None of the answer options is correct.