Context: In a group of jaguars, some individuals have a black coat and others have a spotted coat. In this group, the gene for the coat pattern trait has two alleles. The allele A is for a black coat, and the allele a is for a spotted coat.
Brutus, a jaguar from this group, has a spotted coat. Brutus has two alleles for a spotted coat.
Based on this information, what is Brutus's phenotype for the coat pattern trait?
A. aa
B. a spotted coat
Determine the correct option from the provided choices and reply with its corresponding letter.

B