Task: Misc.
Input (English): Question: Based on *** of *** *** *** from the Arctic, scientists *** that *** *** *** *** pollution. These scientists can *** *** their *** is *** by  (A) analyzing only melted ice cores. (B) analyzing more than one ice core. (C) comparing their data to the expected results. (D) comparing their data to modern pollution levels.
Output (English): E.