Which best summarizes the events from the poem contained in these lines? "When the sun was sunken, he set out to visit The lofty hall-building, how the Ring-Danes had used it For beds and benches when the banquet was over. Then he found there reposing many a noble Asleep after supper; sorrow the heroes, Misery knew not. The monster of evil Greedy and cruel tarried but little, Fell and frantic, and forced from their slumbers Thirty of thanemen"