In a right triangle the square of the hypotenuse is equal to twice the product of the legs. One of the acute angles of the triangle is:
<spanclass=′latex−bold′>(A)</span>15∘<spanclass=′latex−bold′>(B)</span>30∘<spanclass=′latex−bold′>(C)</span>45∘<spanclass=′latex−bold′>(D)</span>60∘<spanclass=′latex−bold′>(E)</span>75∘