HW Score: 81.48%, 22 of Homework: Week 10 HW 1 (L22, L23, L24) Question 26, Bus Econ 5... E Part 1 of 2 O Points: 0 of 1 Suppose the total cost C(x) (in dollars) to manufacture a quantity x of weed killer (in hundreds of liters) is given by the function C(x) = x - 3x2+5x +50, where x > 0. a) Where is C(x) decreasing? b) Where is C(x) increasing? . . . .. a) Select the correct choice below and fill in any answer boxes within your choice. O A. The function is decreasing on the open interval(s) (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.) O B. The function is never decreasing