An office supply store will begin stocking a new type of pen. Expected monthly demand is 800 units. The store is open 300 days a year. The supplier price schedule per pen is as follows: less than 200, $4.0; greater or equal to 200 and less than 400, $3.8; and greater or equal to 400, $3.6. Ordering cost is $40 and annual holding cost is $6 per pen. Round your answers to zero decimal digits. The total cost function of this inventory problem is a: O One parabola O Circle O Straight Line O Step function of parabolas The optimal order quantity for the pen is: 0 300 O 400 O 200 O 100 The optimal total annual inventory cost (including purchasing) is: O 36,720 O 38,627 O 23,600 46,334 If the manager decides to make orders of 200 pens each time an order is made, the number of orders per year is: 26 O 36 O 48 0 52 If the manager decides to make orders of 200 pens each time an order is made, and the lead time to order the pens from the supplier is 2 days. Calculate the reorder point assuming there is 300 working days in a year. 30 pens 64 pens O 100 pens O 200 pens