You have been engaged by the management of Aurora Ltd to review its internal control over the purchase, receipt, storage and issue of raw materials. You have prepared the following comments, which describe Aurora Ltd's procedures. Raw materials, which consist mainly of high-cost electronic components, are kept in a locked storeroom. Storeroom personnel include a supervisor and four clerks. All are well trained and competent. Raw materials are removed from the storeroom only upon written or oral authorisation of one of the production supervisors. There are no perpetual inventory records; hence the storeroom clerks do not keep records of goods received or issued. To compensate for the lack of perpetual records, a physical count is taken monthly by the clerks, who are ell supervised. Appropriate procedures are followed in making the inventory count. . After the physical count, the storeroom supervisor matches quantities counted against a predetermined reorder level. If the count for a given part is below the reorder level, the supervisor enters the part number on a materials requisition list and sends this list to the accounts payable clerk. The accounts payable clerk prepares a purchase order for a predetermined reorder quantity for each part and mails the purchase order to the vendor from whom the part was last purchased. When ordered materials arrive at Aurora Ltd, they are received by the storeroom clerks. The clerks count the merchandise and check the counts against the supplier's bill of lading. All suppliers' bills of lading are initialled, dated and filed in the storeroom to serve as receiving reports. Note: You may assume that any procedures which are not documented above have not been performed. Required: (a) Identify six (6) weaknesses in Aurora Ltd's internal control procedures for the purchase, receipt, storage and issue of raw materials. (6 marks) (b) For each weakness identified in part (a), recommend an improvement to Aurora Ltd's procedures. (6 marks) [Total: 12 marks]