Which statement BEST describes a reason why this defect could re-occur in future releases?

A defect in a SUT has been resolved and validated by an automated defect re-test in the current release of the software. This retest has now been added to the automated regression test suite.

Which statement BEST describes a reason why this defect could re-occur in future releases?
A . Automated defect confirmation testing is not effective at confirming that the resolved defect will continue to work in future releases
B . The configuration management process does not properly control the synchronization between software archives
C . The automated regression test suite is not run consistently for future releases.
D . The automated regression test suite has a narrower scope of functionality

Answer: C