Green Seed Color Is Dominant Over Yellow Seed Color

Green seed color is dominant over yellow seed color. If a plant produces gametes with only yellow seed color, which of the following must be true?

A) Both parents were homozygous recessive for this trait.
B) Both parents carried the recessive trait.
C) One parent was homozygous recessive, and the other was homozygous dominant.
D) Both parents were homozygous dominant for this trait.