Webster, Inc. sells plumbing supplies to contractors in the Northeast region of the United States. Each month, customers monthly statements are automatically printed by a computer system and sent to the accounts receivable (A/R) department where a clerk mails them to the customers. Webster customers mail their payments together with payment stubs back to Webster. An A/R clerk then batches the checks, and sends them to the cashier. After that the A/R clerk uses the payment stub to enter the payments into the computer. The A/R data is updated to record the payment. Required: Prepare a context data flow diagram Prepare a document flowchart Prepare a business process diagram