Required information [The following information applies to the questions displayed below.) Starbooks Corporation provides an online bookstore for electronic books. The following is a simplified list of accounts and amounts reported in its accounting records. The accounts have normal debit or credit balances. Assume the year ended on September 30, 2021. Accounts Payable Accounts Receivable. Accumulated Depreciation. Cash Common Stock Deferred Revenue Depreciation Expense $ 607 307 907 307 207 207 307 Equipment 3,207 Income Tax Expense 307 Interest Revenue. 107 Notes Payable (long-term) 207 Notes Payable (short-term) 507 Prepaid Rent 107 Rent Expense 407 Retained Earnings 1,507 Salaries and Wages Expense 2,207 Service Revenue 6,221 Supplies 507 Supplies Expense 207 Travel Expense 2,607 Required: 1-a. Prepare an adjusted trial balance at September 30, 2021. 1-b. Is the Retained Earnings balance of $1,507 the amount that would be reported on the balance sheet as of September 30, 2021? 2. Prepare the closing entry required at September 30, 2021. (If no entry is required for a transaction/event, select "No Journal Entry Required" in the first account field.) View transaction list