Which one of the following statements is incorrect ? (A) Pareto analysis is a statistical method used for analyzing causes, and is one of the primary tools for quality management. (B) Reliability of a software specifies the probability of failure-free operation of that software for a given time duration. (C) The reliability of a system can also be specified as the Mean Time To Failure (MTTF). (D) In white-box testing, the test cases are decided from the specifications or the requirements.