And that means this case is she is normal. This case is she is colorblind. And so we have one out of two cases is colorblind or one out of two cases is normal. So that means one over two because only one of these cases produces a normal individual within these female cases. So that is equivalent to 0.5, which is equivalent to 50%. And finally, let's do Part D. So in Part D, if the couple has two children, what is the probability that they are both normal?