Suppose the function f has a domain set of all real numbers. Given below is the graph of f(x). f'(x) ... -3 -2 -1 4 5 Which of the following intervals or union of intervals is the function f decreasing? A (- 0, - 3) U (1,5) B (- 00, -1) U (3, + 00 ) (-3,1) U (5, + 0 ) (-1,3)

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