Which of the following would be the BEST population to take a sample from when testing program changes?

A. Test library listings

B. Source program listings

C. Program change requests

D. Production library listings

Explanation:

The best source from which to draw any sample or test of system information is the automated system. The production libraries represent executables that are approved and authorized to process organizational data. Source program listings would be timeintensive. Program change requests are the documents used to initiate change; there is no guarantee that the request has been completed for all changes. Test library listings do not represent the approved and authorized executables.