Context: In a group of Syrian hamsters, some individuals have straight whiskers and others have curved whiskers. In this group, the gene for the whisker type trait has two alleles. The allele for straight whiskers (H) is dominant over the allele for curved whiskers (h).
Rollo is a Syrian hamster from this group. Rollo has the heterozygous genotype Hh for the whisker type gene.
Based on this information, what is Rollo's phenotype for the whisker type trait?
A. straight whiskers
B. curved whiskers
From the given choices, choose the correct answer and respond with the letter of that choice.

A