The argument depends on the assumption that A. no fossils of the coral A. palmata have been found that date from periods when glaciers were not spreading from the polar regions B. geological disturbances since the last period during which glaciers spread have caused no major downward shift in the location of A. palmata fossils C. A. palmata now live in shallow waters in most of the same geographical regions as those in which deep-lying A. palmata fossils have been found D. A. palmata fossils have been found that date from each of the periods during which glaciers are known to have spread from the polar regions E. A. palmata can live at greater depths where the ocean temperature is colder than they can where the ocean temperature is warmer