Context: In a group of dogs, 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.
Rover, a dog from this group, has long fur. Rover has two alleles for long fur.
Based on this information, what is Rover's phenotype for the fur length trait?
A. ff
B. long fur
Identify the correct option from the choices provided and respond with the letter of the correct option.
Answer: B