Which of the Following Is the Best Method for Testing

Multiple Choice

Which of the following is the best method for testing the accuracy of a computer program's calculation of shipping charges?

A) Use either test data or parallel simula-tion to test the computer program.
B) Use generalized audit software to select a monetary-unit sample of invoices that have been billed to customers.
C) Select transactions from invoices with shipping charges using difference estimation.
D) Select transactions from invoices with shipping charges using discovery sampling.