The line x−23=y−34=z−45 is parallel to the plane

The condition that the line  x−x1l=y−y1m=z−z1n is parallel to the plane  ax+by+cz+d=0isal+bm+cn=0Here  l=3,m=4,n=5and verify each option for which  al+bm+cn=0This is matching with the option (1) since  32+41+5-2=0