Regarding the inheritance of color blindness, which of the following statements is correct? I - Color blindness is determined by a recessive allel...

Regarding the inheritance of color blindness, which of the following statements is correct?

I - Color blindness is determined by a recessive allele located on the X chromosome.
II - Women are less frequently affected by color blindness because they have two X chromosomes.
III - Men are more frequently affected by color blindness because they have only one X chromosome.
IV - Women who are carriers of the color blindness allele always transmit it to their male offspring.
a) Only I and II are correct.
b) Only II and III are correct.
c) Only III and IV are correct.
d) Only I, II, and III are correct.
e) All statements are correct.