Your audit firm has listed below some of the selected substantive audit procedures:

1. Ensure that interest paid on the bank loan is correct by multiplying the interest rate by the outstanding principal for each month of the year.

2. Send a letter to the bank to confirm a loan taken out by the company during the year.

3. Attend the year-end stockstake and perform test counts on a sample of stock items.

4. Review all invoices received for one month after the year-end to ensure that they do not relate to the current year.

5. Calculate the accounts receivable turnover and compare with previous year's turnover.

6. Select a sample of non-current assets and sight them.

7. Review the income statement for unusual differences in the balances recorded for this year and last year.

8. Select a sample of invoices and ensure that they have been properly recorded in the sales ledger.

9. Trace the last inventory received before the year-end to the inventory listing.

10. Review the adequacy of the company's allowance for doubtful debts.

REQUIRED:

(a) For EACH test above, indicate what type of substantive audit procedure to which it relates (analytical review, tests of details of balances or tests of details of transactions).

(b) Give an assertion (ONLY ONE) to which each test relates.