In pea plants the allele for white flowers is recessive to the allele for purple flowers. In a generation of pea plants, 89 plants produced purple flowers and 31 produced white flowers. Which of the following is the best conclusion you can make about the parent plants of this generation?

A-- Both parents are heterozygous for flower color.

B--One parent plant had white flowers and the other was heterozygous for flower color.

C--One parent plant was heterozygous for flower color and the other was homozygous with purple flowers.

D-- Both parent plants were homozygous with purple flowers.