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Find the x-values of all points where the function has any relative extrema. Find the value(s) of any relative extrema 25 f(x ) = - X3 2 X2 -6x +7 Select the correct choice below and, if necessary, fill in any answer boxes within your choice O A. There are no relative minima. The function has a relative maximum of at x = (Use a comma to separate answers as needed ) O B. There are no relative maxima. The function has a relative minimum of atx = (Use a comma to separate answers as needed ) O C. The function has a relative maximum of atx= and a relative minimum of at x = (Use a comma to separate answers as needed ). O D. There are no relative extrema