Find all local extrema for the function f x y x 9xy y Find the local maxima Select the correct choice below and if necessary fill in the answer box to complete your choice O A OB There are no local maxima Find the values of the local maxima Select the correct choice below and if necessary fill in the answer box to complete your choice The values of the local maxima are Use a comma to separate answers as needed B There are no local maxima OA There are local maxima located at Type an ordered pair Use a comma to separate answers as needed Find the local minima Select the correct choice below and if necessary fill in the answer box to complete your choice O A OA There are local minima located at Type an ordered pair Use a comma to separate answers as needed OB There are no local minima Find the values of the local minima Select the correct choice below and if necessary fill in the answer box to complete your choice The values of the local minima are Use a comma to separate answers as needed