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17.9 The Computer Warehouse purchases its inventory from more than a dozen different vendors. Orders are placed via telephone, fax, or on the supplier's website. Most orders are delivered the next day. Most orders are filled completely in one shipment, but some- times a supplier is out of stock of a particular item. In such situations, the bulk of the order is shipped immediately and the out-of-stock item is shipped separately as soon as it arrives (such shipments of back orders are never combined with any new orders placed by the Computer Warehouse). The Computer Warehouse pays for some of its purchases C.O.D. but usually pays by the 10th of the month for all purchases made the prior month. None of its suppliers allow it to make installment payments. REQUIRED Draw an REA diagram of the Computer Warehouse's expenditure cycle, complete with cardinalities