Context: This passage describes the agouti fur trait in cats:

In a group of cats, some individuals have agouti fur and others do not. In this group, the gene for the agouti fur trait has two alleles. The allele for having agouti fur (A) is dominant over the allele for not having agouti fur (a).
Nabi is a cat from this group. Nabi has the homozygous genotype AA for the agouti fur gene.
Based on this information, what is Nabi's phenotype for the agouti fur trait?
A. not having agouti fur
B. having agouti fur
Identify the correct option from the choices provided and respond with the letter of the correct option.
Answer: B