The critical numbers a 1 and 2 = -2 are found from a continuous function f'(x). Given that the second derivative is f"(x) = (x - 1)²(x + 2) , use the second derivative test to determine what, if anything, happens at the critical numbers. Only one is correct. O No local maximum. Local minimum at x = 1 and x = -2 O Local maximum at x = 1 and x = -2: No local minimum O The test is inconclusive. O Local maximum at x = 1 - Local minimum at x =-2 O Local maximum at x = -2. Local minimum atx -1