Context: In a group of rats, some individuals have a normal-sized body and others have a dwarf body. In this group, the gene for the body size trait has two alleles. The allele B is for a normal-sized body, and the allele b is for a dwarf body.
Remy, a rat from this group, has a dwarf body. Remy has two alleles for a dwarf body.
Based on this information, what is Remy's phenotype for the body size trait?
A. a dwarf body
B. bb
From the given choices, pick the correct answer and respond by indicating the letter of the correct option.

A