A Man and Woman Are Both of Normal Pigmentation and Have

A man and woman are both of normal pigmentation and have a child who is albino without melanin pigmentation) . Albinism is an autosomal not sex- linked) recessive trait. What are the genotypes of the albino's parents?

A) Both parents must be homozygous dominant.
B) Both parents must be heterozygous.
C) One parent must be heterozygous, the other parent can be homozygous dominant, homozygous recessive, or heterozygous.
D) One parent must be homozygous dominant; the other parent must be heterozygous.
E) One parent must be homozygous for the recessive allele, the other parent can be homozygous dominant, homozygous recessive, or heterozygous.