Given the graph of f'(x) below, where the Domf (x) = (-∞, ∞). Find the interval(s) for which f (x) is decreasing. -6 -2 A. (-∞, -6) U (−2, 3) B. (-∞, -9) U (-5, -2) U (3, ∞) C. (-9,-5) U (1,3) D. (-6, -2) U (3, ∞) E. NO correct choices 3 2 -2 -3 1 23

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