Question 3 8.5 pts The second derivative f"(x) of a function is given. In each case, use this information to determine where the graph of f (x) is concave upward and concave downward and find all values of x for which an inflection point occurs. [ You are not required to find f (x) or the y coordinates of the inflection points.] f"(x) = 12(x - 6)(x - 4) O Concave upward for x 6; concave downward for x 6; inflection points at x = 4, 6 Concave upward for for x 6; inflection points at x = 0, 4, 6