A cost center is an area for which costs are accumulated an area of the business accountable for both costs and revenues the part of the business where all costs are paid to suppliers a production department where all production costs are aggregate Rock Creek Bottling Company pays its production manager a salary of $6,000 per month. Salespersons are paid strictly on commission, at $1.50 for each case of product sold. For Rock Creek Bottling Company, the production manager's salary is an example of: a variable cost. A mixed cost. A fixed cost. None of these. Mayberry Corporation has provided the following data: The contribution margin is: $72,000 $240,000 $560,000 $632,000 The following balance sheet information is provided for Pinnacle Company for 2014