Context: In a group of cows, some individuals have solid coloring and others have white spots. In this group, the gene for the coat pattern trait has two alleles. The allele A is for solid coloring, and the allele a is for white spots.
Bolt, a cow from this group, has solid coloring. Bolt has two alleles for solid coloring.
Based on this information, what is Bolt's phenotype for the coat pattern trait?
A. solid coloring
B. AA
From the given choices, choose the correct answer and respond with the letter of that choice.

A