If a Woman Is a Carrier for the Color Blind

Multiple Choice

If a woman is a carrier for the color blind recessive allele and her husband is normal,what are their chances that a son will be color blind?

A) None since the father is normal.
B) 50%, since the mother is only a carrier.
C) 100% because the mother has the gene.
D) 25% because the mother is a hybrid.
E) None since the son will also be just a carrier.