Context: In a group of tomato plants, some individuals have red fruit and others have yellow fruit. In this group, the gene for the fruit color trait has two alleles. The allele for red fruit (F) is dominant over the allele for yellow fruit (f).
A certain tomato plant from this group has the homozygous genotype ff for the fruit color gene.
Based on this information, what is this plant's phenotype for the fruit color trait?
A. yellow fruit
B. red fruit
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

A