A credit card company that processes millions of transactions each year has experienced an increase in fraudulent transactions. The company maintains a data warehouse with data about customers and transactions from the past five years. How could the company best use this data to detect potentially fraudulent charges within 24 hours of receipt of transaction data? A. Employ data mining. B. Increase the internal audit staff. C. Adopt more stringent credit-approval policies. D. Use sequential coding for authorization numbers.