Context: In a group of leopards, some individuals have a spotted coat and others have a black coat. In this group, the gene for the coat pattern trait has two alleles. The allele A is for a spotted coat, and the allele a is for a black coat.
Lyla, a leopard from this group, has a black coat. Lyla has two alleles for a black coat.
Based on this information, what is Lyla's genotype for the coat pattern gene?
A. a black coat
B. aa
Identify the correct choice from the options below and respond with the letter of the correct option.

B