For how many values of the constant k will the polynomial x2+kx+36 have two distinct integer roots?<spanclass=′latex−bold′>(A)</span>6<spanclass=′latex−bold′>(B)</span>8<spanclass=′latex−bold′>(C)</span>9<spanclass=′latex−bold′>(D)</span>14<spanclass=′latex−bold′>(E)</span>16