Required: A sales invoice typically includes the date of sale, salesperson, customer data, items included in the sale, and amount. Which foreign keys should be added to the following table to link all of these data elements? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer. Any boxes left with a question mark will be automatically graded as incorrect.) Remittance Advice # Cashier # Salesperson # Inventory # Cash Receipt # Sales # Customer #