Context: In a group of horses, some individuals have a black coat and others have a reddish-brown coat. In this group, the gene for the coat color trait has two alleles. The allele L is for a black coat, and the allele l is for a reddish-brown coat.
Argo, a horse from this group, has a reddish-brown coat. Argo has two alleles for a reddish-brown coat.
Based on this information, what is Argo's phenotype for the coat color trait?
A. a reddish-brown coat
B. ll
Determine the correct option from the provided choices and reply with its corresponding letter.
Answer: A