Determine the location and value of the absolute extreme values of f on the given interval, if they exist.
f(x) = - 2x^3 + 33x^2 - 168x on [3,8]
What is/are the absolute maximum/maxima of f on the given interval? Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice.
A. The absolute maximum/maxima is/are at x = .
(Use a comma to separate answers as needed. Type exact answers, using radicals as needed.)
B. There is no absolute maximum of f on the given interval.