2) A local retailer of plumbing supplies faces demand for one of its SKUs at a constant demand of 80 units per week. Carrying cost is estimated as $1.5 per unit per year. Each time stocks are replenished, the company is charged with $ A where A varies based on the sum of the numbers in your Student ID. a) To minimize total inventory cost, how many units should be ordered each time an order is placed? b) How many orders per year are needed? c) Calculate the average cycle inventory. d) What is optimal interval between orders? c) If the company orders 335 units each time an order is placed, for this policy to be optimal, determine what the ordering cost would be Sum of the numbers in 4 Choose the appropriate value depending on your student ID your Student ID. For ex: if your student ID is 10-18 11920307 (the sum of the numbers is 23), so 19-25 15 A-15. 17 10 26-35 19 is sum of ng number