Find the limit of f as (x,y)(0,0) or show that the limit does not exist. Consider converting the function to polar coordinates to make finding the limit easier. 3 2 x - xy f(x,y) = x +y? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. . lim f(x,y) = (x,y) (0,0) (Simplify your answer.) B. The limit does not exist.