Please find absolute minimum and maximum

Find the absolute extrema if they exist, as well as all values of x where they occur, for the function f(x) =3x4 + 20x3 + 36x2 -4. Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. The absolute maximum is which occurs at x = (Round the absolute maximum to two decimal places as needed. Type an exact answer for the value of x where the maximum occurs. Use a O B. There is no absolute maximum. Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. The absolute minimum is which occurs at x = (Round the absolute minimum to two decimal places as needed. Type an exact answer for the value of x where the minimum occurs. Use a con O B. There is no absolute minimum