For which kind of plant, Tall or short, do you know its genotype just by looking at the plant? and why?

A
A TALL plant, because the TALL phenotype is dominant

B
A TALL plant, because the TALL phenotype has multiple genotype options

C
A short plant, because the short phenotype occurs less frequently

D
A short plant, because the short phenotype is recessive and only has one genotype option