(1 point) Consider the function f(x) = xlxl. a.) On the interval (00,0), f\"(x) = b.) On the interval (0, (3), f I, (x) = Thus, c.) On the interval (00,0), f (x) is Concave down v d.) On the interval (0, 00), f(x) is Concave up v e.) Does f\"(0) exist? No v