Find all points where the function has any relative extrema. Identify any saddle points f(x,y) =2x +4y -24xy+24 Find the derivatives fxx, fyy, and fxy fox =. fyy =. fxy = 0 Identify all the relative maxima. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The relative maximum point(s) is(are) (Simplify your answers. Type ordered pairs. Use a comma to separate answers as needed.) O B. There are no relative maxima. Identify all the relative minima. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The relative minimum point(s) is(are) (Simplify your answers. Type ordered pairs. Use a comma to separate answers as needed.) O B. There are no relative minima. Identify all the saddle points. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The saddle point(s) is(are). (Simplify your answers. Type ordered pairs. Use a comma to separate answers as needed.) O B. There are no saddle points