So B and C. Now the percent recombination between B and C is 3%. So that means the distance between B and C is three map units. Now we can either place C three units above B or we can place it three units below C. So the question is, should we place it above or should we place it below C? Now to answer that question, we actually have to look at the recombination percent, or the percent recombination between the final pair A and C. So the percent recombination between A and C must be 8%. And notice if we place C above B. So three units above B, that means it's going to lie somewhere here.