A company explained its unique quarterly seasonal pattern. This pattern clearly shows that sales were always high in the first two months of each quarter and low in the third month. The company wanted to know what cause their customers to buy in such a way. Upon investigation it was found that sales quotas $($that were based on sales forecasts$)$ were set too low and the salesforce received a lower commission for any sales in excess of the quota in any month. Thus, the salesforce simply sold at normal levels until their quota was met and would not call on customers during the third month. Literally, customers could not buy from the company for four months each year. As a sales manager, what changes need to be made in the sales quota and sales forecasts and which of economic, intrinsic satisfaction or social relationships will motivate the salesforce best.