Economics homework help

CASE A: Fred’s Electrical, Inc. (Cash Receipts Process)Fred’s Electrical, Inc. sells electrical parts to electrical contractors in the northwesternUnited States. Fred’s customers mail their payments—attached to the stub (i.e., remit-tance advice [RA]) from their monthly statement—to Fred’s accounts receivable (AR)office. An AR clerk confirms that the check amount agrees with the amount on the RAand sends the checks to the cashier. The AR clerk prepares batch totals of the customernumbers, invoice numbers, and amount paid. The AR clerk then enters the batch totals and RAs into the computer, where the AR master data is updated to record the pay-ment. The computer reconciles the batch totals, confirms job completion, and reportsdiscrepancies, if any, to the AR clerk.For the case complete the followingrequirements:a. Prepare a table of entities and activities.b. Draw a context diagram.c. Draw a physical data flow diagram (DFD).d. Prepare an annotated table of entities and activities. Indicate on thistable the groupings, bubble numbers, and bubble titles to be used inpreparing a level 0 logical DFD.e. Draw a level 0 logical DFD.