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.
Athena, a jaguar from this group, has a black coat. Athena has one allele for a black coat and one allele for a spotted coat.
Based on this information, what is Athena's phenotype for the coat pattern trait?
A. Aa
B. a black coat
Identify the correct option from the choices provided and respond with the letter of the correct option.

B