If a system has been tested and only a few defects have been found, what can we conclude about the state of the system?
a) The system may be defect free but the testing done cannot guarantee that this is true.
b) The system is defect free and further testing would therefore be a waste of resources.
c) It depends what the system is designed to do.
d) Further testing should be considered but this should be focused on areas of highest risk because it would not be possible to test everything.
e) Testing should be curtailed because it is yielding no value.