A project manager used a control chart to determine whether a process was stable or not, and to determine if its performance was predictable. He determined the upper and lower specification limits based on the contractual requirements. A set of eighteen data points were taken. Of these, $8$ consecutive data points were above the mean. What can you say about such a process?

A$.$ A process is considered as out of control if five consecutive data points are above or below the mean. Hence the process is out of control.

B$.$ A process is considered out of control if six consecutive data points are above or below the mean. Hence the process is within control.

C$.$ A process is considered as being within control if less than half the data points are above or below the mean. Hence the process is within control.

D$.$ A process is considered as out of control if seven consecutive data points are above or below the mean. Hence the process is out of control