In Humans, the Allele for Red-Green Color Blindness Is X-Linked

Multiple Choice

In humans, the allele for red-green color blindness is X-linked and recessive (Xʳ; the dominant allele is called Xᴿ) . A man with normal color vision marries a color-blind woman who gives birth to a color-blind daughter. What can be inferred from this information?

A) The woman is XᴿXʳ.
B) The man must be a carrier for the color blindness allele.
C) The daughter must be heterozygous.
D) The man is probably NOT the father of the daughter.