A. Using the Internet, review at least 3 articles on Protit-Cost-Volume relationship. Summary {300 words or more) the articles in your own words. B. As a manager, why is Profit-costvolume important in planning? Support your response with numerical example(s) C. Using the Internet, review at least 3 articles on Variable Costing. Summary (300 words or more) the articles in your own words. D. As a manager, discuss how you would use Variable Costing in managerial decisions Support your response with numerical example(s)