X -6-5-4-8-2- 23456 a. Find the numbers, if any, at which f has a relative maximum, and find the relative maxima(maximum). Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. A. The function f has (a) relative maxima(maximum) at [-2,0] and the relative maxima(maximum) are(is). (Use a comma to separate answers as needed.) O B. The function f has no relative maxima. b. Find the numbers, if any, at which f has a relative minimum, and find the relative minima(minimum). Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. The function f has (a) relative minima(minimum) at and the relative minima(minimum) are(is) (Use a comma to separate answers as needed.) O B. The function f has no relative minima