Red-Green Color Blindness Is a Recessive X-Linked Trait

Multiple Choice

Red-green color blindness is a recessive X-linked trait. If a female is red-green color-blind, which of the following is true?

A) Her mother must be color-blind.
B) Both her parents must be color-blind.
C) Both her parents are carriers of the recessive allele.
D) Her father must be color-blind.
E) Women cannot exhibit red-green color blindness because they have two X chromosomes.