Hy Nozetz was providing his students with two audit procedures he had used in his days as an auditor: 

1. To test the completeness of sales (i.e., test whether shipments have been billed to customers) we looked at subsequent payments after the year end for payments for outstanding invoices. 

2. The types of evidence we considered most reliable in the audit of accounts payable was a review of internal budgets for the period under audit. 

a. Only statement 1 is true 

b. Only statement 2 is true 

c. Both statements 1 and 2 are true 

d. Neither statements 1 or 2 are true.