The adjusted trial balance of Concord Company shows the following data pertaining to sales at the end of its fiscal year, October 31, 2020: Sales Revenue $728,400, Delivery Expense $12,780, Sales Returns and Allowances $25,320, and Sales Discounts $12,380.

a. Prepare the revenues section of the income statement.
b. Prepare separate closing entries for (1) sales and (2) the contra accounts to sales.