In some plants, $H$ is the dominant allele for hairy stems, while $h$ is the recessive allele for smooth stems. One 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$hh \times hh$