The document to indicate that the seller need to use to inform the buyer about the payment owed for this purchase is an invoice.
An invoice is defined as a commercial document that is sent by a seller to a buyer referring to a sale dealing and expressing the quantities, products, and agreed-upon prices for products or services the seller had provided the customer.
The invoice is also known as the bill, or tab. In some lawsuits, payment states are indicated on the invoice.
A supplier of business office supplies paper, toner, and staples to a business buyer, then the seller required to use an invoice form to advise the buyer of the payment due for this purchase.
Therefore, option B is correct.
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