Now, before we jump to A, notice that we have four individual cases and each one of these case and each one of these cases have equal likelihood of taking place. So we have a 25% chance of this event taking place, a 25% chance of this event taking place, a 25% chance here and a 25% chance here. And together, if we add up these likelihoods, we get 100%. So it's 100% likelihood that we're going to have a child. Now, in part A, what is the probability that the child is color blind? And we don't care if the child is male or a female.