On a $10000 order a merchant has a choice between three successive discounts of 20%, 20%, and 10% and three successive discounts of 40%, 5%, and 5%. By choosing the better offer, he can save:
<spanclass=′latex−bold′>(A)</span>nothing at all<spanclass=′latex−bold′>(B)</span>$440<spanclass=′latex−bold′>(C)</span>$330<spanclass=′latex−bold′>(D)</span>$345<spanclass=′latex−bold′>(E)</span>$360