Salespeople at Best Auto Parts Ltd. are dissatisfied when items are out of stock in the warehouse because they don't get their commissions when customers go to a competitor instead of waiting for the item to arrive. On the other hand, warehouse employees can't understand why the sales team don't appreciate the need to minimize inventory costs, for which the warehouse team is rewarded. This is mainly an example of conflict due to: goal incompatibility. inability to communicate. arbitration. differentiation. pooled task interdependence