Well, notice that this individual cannot be uppercase B, uppercase B, because if it were uppercase B uppercase B, what that means is these two individuals would be heterozygous and so that is not true. What about if it's this? Well if it's this, then we have BB, we have lowercase B, lowercase B, and so what this would produce is it would produce 50% heterozygous, so 50% heterozygous and 50% homozygous recessive. And that is consistent with our results. We see that the only time this works out is if this individual's upper case B, lowercase B. In that case this works out, this works out and this also works out.