Code example 4-1 SELECT vendor name, invoice_number FROM invoices LEFT JOIN vendors ON invoices vendor_id = vendors. vendor_id (Refer to code example 4-1.) If the LEFT keyword is replaced with the RIGHT keyword, the total number of rows that are returned must equal the number of rows in the Invoices table none of the answers given are correct the number of rows in the Invoices table plus the number of rows in the Vendors table the number of rows in the Vendors table