The price of an article is cut 10%. To restore it to its former value, the new price must be increased by:
<spanclass=′latex−bold′>(A)</span>10%<spanclass=′latex−bold′>(B)</span>9%<spanclass=′latex−bold′>(C)</span>1191%<spanclass=′latex−bold′>(D)</span>11%<spanclass=′latex−bold′>(E)</span>none of these answers