The general ledger department receives the account summary and the journal voucher from the AR department and cash receipts, respectively. The clerk reviews the two documents and updates the control accounts in the digital general ledger via the department personal computer. Finally, the clerk files the account summary and journal voucher in the department. Required: a. Create a data flow diagram of the current system. b. Create a system flowchart of the existing system. c. Analyze the internal control weaknesses in the system. Model your response according to the six categories of physical control activities specified in COSO. d. Prepareasystemflowchartofaredesignedcomputerbasedsystemthatresolvesthecontrolweaknessesyou identified.