Which of the following most logically completes the passage? A. large masses of floating sea ice would continue to form in the wintertime B. significant changes in Arctic sea temperatures would be accompanied by changes in sea temperatures in more temperate parts of the world C. such a warm Arctic Ocean would trigger the melting of massive landbased glaciers in the Arctic D. an ice-free Arctic Ocean would support a very different ecosystem than it does presently E. in the spring, melting sea ice would cause more icebergs to be created and to drift south into shipping routes