Read the case. Then answer the questions based on it.

BACKGROUND: Audit standards indicate that there is a presumption that auditors will confirm accounts receivable unless the balance is immaterial, confirmations are deemed ineffective, or the auditors' assessment of risk is low and other procedures will achieve the same objective. However, these instances are considered few and far between and current trends in auditing indicate that there is an expectation that accounts receivable will be confirmed. Auditors may stratify the population, use haphazard or judgmental sampling, and send positive or negative requests. Jenner & Jenner CPAs are the auditors for the Leno Company. In reviewing the accounts receivable aging, the auditors learn that there is a high number of accounts with balances, there are some very large and very small balances, and many customers' balances consist of multiple invoices.

1. Should Jenner & Jenner CPAs send accounts receivable confirmations?

2. How should the auditors mitigate the risk associated with both very large and very small balances?

3. Because so many customer balances consist of multiple invoices, what could the auditors do to eliminate unnecessary reconciliation?

4. What procedures can be performed on customers who do not respond?