In sunflowers, tall stems (T) is a dominant trait while short stems (t) is a recessive trait. In a field of 1000 sunflowers, 820 are tall plants and 180 are short. Which statement BEST describes the genotype of the sunflowers in the field?

A)About 50% are homozygous for tall stems.
B)About 75% are homozygous for tall stems.
C)About 50% are homozygous for short stems.
D)About 50% are heterozygous for tall stems.