For a class experiment, Mark pollinates two red flowering plants. One of the plants created produces white flowers. Which of the following is an inference Mark could make?
A. Both parents were hybrids and carried one recessive allele for the recessive trait.
B. Both parents were purebred. One carried two of the recessive alleles and the other carried two dominant alleles.
C. Neither parent had the recessive allele.
D. One parent had two of the dominant alleles and the other one was heterozygous for that trait.