If the Economic Production Quantity is 1000 units, the production rate is 10 units per day and the usage rate is 5 units per day, what is the average inventory that is carried by the production plant? If the holding cost is $4 per unit per year, what is the annual holding cost? Average Inventory =200; Annual Holding Cost =$800 Average Inventory =500; Annual Holding Cost =$2000 Average Inventory =250; Annual Holding Cost =$1000 Average Inventory =1000; Annual Holding Cost =$4000