In Drosophila, red-eye color is dominant over white-eye color. A female Drosophila with red eyes and unknown genotype was crossed to a male with red eyes. Half of the male progeny have red eyes. The following may be true about the female with unknown genotype.
A. She is heterozygous for red eyes.
B. None of these
C. She is hemizygous for red eyes.
D. She is homozygous for red eyes