The following questions concern audit evidence and audit documentation. Choose the best response. 

a. According to PCAOB audit standards, audit documentation must be retained for 

b. Which of the following types of audit evidence is generally the most reliable? 

(1) One year. 

(2) Three years. 

(3) Five years. 

(4) Seven years. 

(1) A bank confirmation 

(2) A bank statement 

(3) Analytical procedures 

(4) Inquiries of the audit committee 

c. An auditor most likely would apply analytical procedures in the overall review stage of an audit to 

(1) Identify unusual or unexpected balances that were not previously identified. 

(2) Obtain an understanding of high-risk areas. 

(3) Evaluate the design and implementation of internal control. 

(4) Identify related party transactions that may not have been previously identified.