It can be inferred from the passage that in sediment cores from the North Atlantic's deep waters, the portions that correspond to the Little Ice Age A. differ very little in composition from the portions that correspond to the MedievalWarm Period B. fluctuate significantly in composition between the portions corresponding to the 1300s and the portions corresponding to the 1700s C. would be likely to contain a proportion of red-stained grains closer to 17 percent than to 5 percent D. show a much higher proportion of red-stained grains in cores extracted from the far north of the North Atlantic than in cores extracted from further south E. were formed in part as a result of Gulf Stream waters having been pulled northward