A) When will a company use a predictive decision model? A. When it wishes to determine the best product pricing to maximize revenue. B. When it wishes to know how best to use advertising strategies to influence sales. C. When it wishes to know sales patterns to plan inventory levels. D. When it wishes to ensure that a specified level of customer service is achieved. B) Which of the following is necessary to calculate the variable cost of production for the company to develop a profit model? A. unit sale price B. quantity of item produced C. quantity of item sold OD. fixed cost of production