Given the following SQL Query, which columns would you recommend to be indexed?

SELECT InvoiceNumber, InvoiceDate, Invoice_Total, Invoice_Paid, Invoice_Total - Invoice_Paid as Balance FROM Invoice WHERE Invoice_Date >= "2015-07-20" and Salesman_Id = "JR" ORDER BY DESC Invoice_Total

Drag the correct answers to one of the three pockets.

InvoiceNumber Invoice_Date nvoice Total Invoice Paid Salesman_ld