The women was a carrier of the color blind trait, its recessive so she passed the trait down on his only X chromosome, men are more likely to be color blind because they only have to have one faulty X chromosome. females have to have both X's wrong.
and O is also a recessive trait so they had AO and BO blood types and the OO matched up for there baby
I think its C.
I hope this helps and please do correct me if im wrong.
The answer is the first option- "A-T"
