Context: In a group of muskmelon plants, some individuals have sour fruit and others have sweet fruit. In this group, the gene for the fruit taste trait has two alleles. The allele for sour fruit (F) is dominant over the allele for sweet fruit (f).
A certain muskmelon plant from this group has the heterozygous genotype Ff for the fruit taste gene.
Based on this information, what is this plant's phenotype for the fruit taste trait?
A. sweet fruit
B. sour fruit
Choose the right answer from the options and respond with its letter.

B