Find the open intervals where the function graphed below is (a) increasing, or (b) decreasing. (a) List the open interval(s) where the function is increasing. Select the correct choice 1009 below and, if necessary, fill in the answer box to complete your choice. 800 A. Increasing on 600 (Type your answer in interval notation. Simplify your answer. Use integers or fractions for any numbers in the expression. Use a comma to separate answers 400 as needed.) 200- O B. Never increasing 10 -3 6 /