please help with these SP questions. thank you !

Narrative 2: Cornick, Inc. Cornick, Inc. sells office products to businesses in the eastern region of the United States. Each month, the IT division at Cornick prints monthly statements and sends them to the accounts receivable (AR) department, where a clerk mails them to the customers. Cornick's customers mail their payments back to Cornick, where a clerk in AR batches the checks and sends them to the cashier. The AR clerk then uses the payment stub to enter the payments into the computer, where the AR master data are updated to record the payment. SP 4-1 Use the narrative(s) on pg. 136, as selected by your instructor, to prepare a table of entities and activities. SP 4-2 Use the narrative(s) on pg. 136, as selected by your instructor, to draw a context diagram. If you did Short Problem 4.1, use that information to help you construct the diagram. a. Use Microsoft Visio, any other diagramming software or another Microsoft office product such as Excel to create the diagram you drew in Short Problem 42. SP 4-3 Use the narrative(s) onypg. 136, as selected by your instructor, to prepare a physical DFD. If you completed any of the previous short problems, use that information to help you construct the diagram. a. Use Microsoft Visio, any other diagramming software, or another Microsoft office product such as Excel to create the diagram you drew in Short Problem 43