When you look at a control chart that measures defects in the product produced by your project, you find that seven values are above the mean on the chart. What should be your next step?

Group of answer choices

a. You should adjust the variance and the control limits, since these may not have been set correctly

b. You should ignore the anomaly, since this is statistically insignificant

c. You should adjust the mean and arrive at a new mean

d. Your should examine the process that is being measured, since there might be a problem with the process being measured