Context: In a group of Syrian hamsters, some individuals have short fur and others have long fur. In this group, the gene for the fur length trait has two alleles. The allele F is for short fur, and the allele f is for long fur.
Lottie, a Syrian hamster from this group, has long fur. Lottie has two alleles for long fur.
Based on this information, what is Lottie's phenotype for the fur length trait?
A. long fur
B. ff
Identify the correct option from the choices provided and respond with the letter of the correct option.

A