(1 point) Consider the function an] = $26131. For this function there are three important intervals: (700,21], [1-1, B], and [3, 00) where A and B are the critical numbers. Find A and B For each of the following intervals, tell whether f($) is increasing (type in INC) or decreasing (type in DEC). (00, A]: [A, B]: [3: 00)