Developing a single-period system for an item is a two-step process: A. determine the target service level (SL Subscript Upper T) and the economic order quantity (EOQ). B. determine the economic order quantity (EOQ) and the target stocking point (TS). C. determine the economic order quantity (EOQ) and the dependent demand inventory (DDI). D. determine the target service level (SL Subscript Upper T) and the target stocking point (TS)