Context: In a group of guinea pigs, some individuals have brown eyes and others have red eyes. In this group, the gene for the eye color trait has two alleles. The allele E is for brown eyes, and the allele e is for red eyes.
Alvin, a guinea pig from this group, has brown eyes. Alvin has two alleles for brown eyes.
Based on this information, what is Alvin's phenotype for the eye color trait?
A. brown eyes
B. EE
Identify the correct choice from the options below and respond with the letter of the correct option.
Answer: A