A manufacturer sells video games with the following cost and revenue functions (in dollars), where x is the number of games sold. Determine the interval(s) on which the profit function is increasing. C(x)=0.12x-0.00006x3 R(x)=0.876x2 -0.0002x3 Select the correct choice below and fill in any answer boxes within your choice. A. The profit function is increasing on the 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.) B. The profit function is never increasing.