Identify the internal control weakness in the following situations. State how the person can hurt the company.

A. Jerry Miller works as a security guard at ALTEX parking in Denver. Miller has a master key to the cash box where commuters pay for parking. Each night Miller prepares the cash report that shows (a) the number of cars that parked on the lot and (b) the day's cash receipts. Sandra Covington, the ALTEX treasurer, checks Miller's figures by multiplying the number of cars by the parking fee per car. Covington then deposits the cash in the bank.

B. Sharon Fisher is the purchasing agent for Manatee Golf Equipment. Fisher prepares purchase orders based on requests from division managers of the company. Fisher faxes the purchase order to suppliers who then ship the goods to Manatee. Fisher receives each incoming shipment and checks it for agreement with the purchase order and the related invoice. She then routes the goods to the respective division managers and sends the receiving report and the invoice to the accounting department for payment.

c. The external auditor for Mattson Financial Services takes a global view of the audit. To form his professional opinion of Mattson's financial statements, the auditor runs no tests of Mattson's financial statements or of the underlying transactions. Instead, the auditor computes a few ratios and compares the current-year ratio values to the ratio values a year ago. If the ratio values appear reasonable, the auditor concludes that Mattson's financial statements are okay.