Concord Ltd. had beginning inventory of 53 units that cost $101 each. During September, the company purchased 208 units on account at $101 each, returned 9 units for credit, and sold 154 units at $201 each on account. (a) Journalize the September transactions, assuming that Concord Ltd. uses a perpetual inventory system. (Credit account titles are automatically indented when the amount is entered. Do not indent manually. If no entry is required, select "No Entry" for the account titles and enter O for the amounts.) Account Titles and Explanation Debit Credit (To record purchase on account) (To record purchase return)