please I really need help. read the given case and answer the questions

Q1) develop an improved business process using DFD. use appropriate symbols and labels for DFDs including context diagram Q2) base in your answers above identify each specific improvements (changes) and discuss the rational behind each of these specific improvements (changes)

Case Analysis. Read the given case and answer the questions after the case. Case: North Pole Corporation (NPC) The North Pole Corporation (NPC) is a bicycle tires dealer that operates 25 retail stores in lloilo City. The company maintains a centralized purchasing and warehouse facility and employs a perpetual inventory system. All purchases of tires and related supplies are placed through the company's central purchasing department to take advantage of the quantity discounts offered by its suppliers. The tires and supplies are received at the central warehouse and distributed to the retail stores as needed. The perpetual inventory system at the central facility maintains current inventory records, which include designated reorder points, optimum order quantities, and balance-on-hand information for each type of tre or related supply. The participants involved in the NPC's inventory system include (1) retail stores, (2) the inventory control department, (3) the warehouse, (4) the purchasing department, (5) accounts payable and, (6) outside vendors. The inventory control department is responsible for maintenance of the perpetual inventory records for each item carried in inventory. The warehouse department maintains the physical inventory of all items carried by the company's retail stores. All deliveries of tires and related supplies from the vendors are received by receiving clerks in the warehouse department, and all distributions to retail stores are filled by shipping clerks in this department. The purchasing department places every order for items needed by the company. The accounts payable department maintains the subsidiary ledger with vendors and other creditors. The documents used by these arious departments are as follows: Retail Store Requisition (Form RSR). The retail stores submit this document to the central warehouse whenever tires and supplies are needed at the stores. The shipping clerks in the warehouse department fill the orders from inventory and have