Management of a financial serA client would like to implement a management information system that integrates all functional areas within an organization to allow information exchange and collaboration among all parties involved in business operations. Which of the following systems is most effective for this application?

A. A decision support system (DSS) .
B. An executive support system (ESS) . An office automation system (OAS) .
C. An enterprise resource planning system (ERP) .
D. vices company is considering a strategic decision concerning the expansion of its existing local area network (LAN) to enhance the firm's customer service function.