2. A process with =1.0 was in control and an x chart was set. A shift of the process mean took place due to assignable causes. Assuming that the new process mean is at the lower control limit of the original x control chart. In using the same x chart to monitor the shifted process, A) the average number of samples required to detect this shift is about 4 B) the average number of samples required to detect this shift is about 2 C) the average number of samples required to detect this shift is about 370 D) the average number of samples required to detect this shift can be any value between 4 to 25 . E) the average number of samples required to detect this shift depends on the sample size