I'm struggling with this question, can someone please show a step by step

Find the absolute extrema if they exist, as well as all values of x where they occur, for the function f(x) = - 2x* - 8x + 16x-+ 1. 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 comma to separate answers as needed.) O B. There is no absolute minimum. 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 comma to separate answers as needed.) O B. There is no absolute maximum