Context: In a group of pea plants, some individuals have a tall stem and others have a short stem. In this group, the gene for the stem height trait has two alleles. The allele H is for a tall stem, and the allele h is for a short stem.
A certain pea plant from this group has a short stem. This plant has two alleles for a short stem.
Based on this information, what is this pea plant's phenotype for the stem height trait?
A. hh
B. a short stem
From the given choices, choose the correct answer and respond with the letter of that choice.

B