= Consider the function f(x) - 2x3 + 33x - 168x + 3. For this function there are three important open intervals: ( , A), (A, B), and (B, ) where A and B are the critical numbers. Find A and B For each of the following open intervals, tell whether f(x) is increasing or decreasing. (-00, A): Select an answer (A, B): Select an answer (B, 00): Select an answer