Which of the following statements BEST describes one of the seven key principles of software testing?
A. Automated tests are better than manual tests for avoiding the Exhaustive Testing.
B. Exhaustive testing is, with sufficient effort and tool support, feasible for all software.
C. It is normally impossible to test all input / output combinations for a software system.
D. The purpose of testing is to demonstrate the absence of defects. The purpose of testing is to demonstrate the absence of defects.