The base of a triangle is twice as long as a side of a square and their areas are the same. Then the ratio of the altitude of the triangle to the side of the square is:
<spanclass=′latex−bold′>(A)</span>41<spanclass=′latex−bold′>(B)</span>21<spanclass=′latex−bold′>(C)</span>1<spanclass=′latex−bold′>(D)</span>2<spanclass=′latex−bold′>(E)</span>4