Which of the Following Statements Correctly Describes a Quantitative Trait

Which of the following statements correctly describes a quantitative trait?

A) People who are homozygous for the group of genes associated with skin pigment have either lighter . or darker skin than those who are heterozygous for those genes.
B) The alleles of the gene for red hair color is masked by the gene for brown hair color.
C) A person heterozygous for dwarfism will always have the dwarf phenotype.
D) A woman who has one allele for color blindness will not be color blind, but a man who has one allele for color blindness will be color blind.
E) 25% of the offspring from a cross of two fruit flies that are heterozygous for curly wings will have curly wings.