Context: In a group of rabbits, some individuals have black fur and others have brown fur. In this group, the gene for the fur color trait has two alleles. The allele F is for black fur, and the allele f is for brown fur.
Briar, a rabbit from this group, has brown fur. Briar has two alleles for brown fur.
Based on this information, what is Briar's genotype for the fur color gene?
A. ff
B. brown fur
From the given choices, select the correct answer and reply with the letter of the chosen option.

A