Two nonhorizontal, non vertical lines in the xy-coordinate plane intersect to form a 45∘ angle. One line has slope equal to 6 times the slope of the other line. What is the greatest possible value of the product of the slopes of the two lines?<spanclass=′latex−bold′>(A)</span>61<spanclass=′latex−bold′>(B)</span>32<spanclass=′latex−bold′>(C)</span>23<spanclass=′latex−bold′>(D)</span>3<spanclass=′latex−bold′>(E)</span>6