Given the x$-$bar SPC chart below $-$ what is our best course of action? The process is out of control so we should initiate a root cause investigation

The process is in control but we should investigate the reason for the recent run of increasing results

The process is in control so we do not need to take any action

The process is fully capable of meeting specifications so no action is required

The process is out of control and we should take no action until a point falls outside of the control limits