Find the open intervals where the function graphed below is (a) increasing, or (b) decreasing.(a) List the interval(s) where the function is increasing. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.A. Increasing on (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 as needed.)B. Never increasing(b) List the interval(s) where the function is decreasing. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.A. Decreasing on (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 as needed.)B. Never decreasing