The following are the comparative descriptions between Continuous Time Study (CTS) and Work Sampling (WS) i.e., two of the measurement methods for crew performance in an engineering project. Which of the following is incorrect? (1 point) Select by bolding the correct answer(s).

a. CTS measures the time of the sequenced actions by a person or a machine continuously b. WS measures statistics derived from data collected at random intervals c. Measured values from two methods sometimes show different outcomes d. WS shows higher productivity during its measuring, than CTS e. None of the above