[单选题]
A man and a woman ha mu4/v0fulzjgr:n 5d j*(sd 2*qg9qqhve aybct./6o lrj (p2,(lc 8 xuxnt daughter and a son. Their daughter has normal vision, but their son is colourblind. Which one of these genotypes could be correct for the biological mother /(x lc 2,(jnu6tp.ry btolx8c?