Given the graph of f' (x) below, where the Dom f (x) = (-∞, ∞). Find the interval(s) for which f"" (x) < 0. H -6 -5 -2 A. (-∞, -6) U (-2, 0) B. (-∞, -9) U (-5, 1) U (4, ∞) C. (-∞, -6) D. (-6, -2) U (3, ∞) E. (-6, 2) U (2, 3) U (3, ∞) 3 2 -2 -3 1 23

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