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 for brown fur (f) is recessive to the allele for black fur (F).
Lollipop is a rabbit from this group. Lollipop has the homozygous genotype ff for the fur color gene.
Based on this information, what is Lollipop's phenotype for the fur color trait?
A. brown fur
B. black fur
Answer with the option's letter from the given choices directly.

A