In some plants, $H$ is the dominant allele for hairy stems, while $h$ is the recessive allele for smooth stems. A mating pair of these plants has 37 offspring, of which 18 have hairy stems and 19 have smooth stems. What are the most likely genotypes of the parents?
- A$HH \times HH$
- B$Hh \times Hh$
- C$Hh \times hh$
- D$hh \times hh$