6. Refer to the data in (5) above. a. If the new plant is built, how many balls will have to be sold next year to earn the same net operating income, $108,000, as last year? (Do not round intermediate calculations.) Number of balls b-1.Assume the new plant is built and that next year the company manufactures and sells 52,000 balls (the same number as sold last year). Prepare a contribution format income statement (Do not round your intermediate calculations.) Northwood Company Contribution Income Statement