The ice cream that must be served in an ice cream parlor has to be between $-15$ ?degrees Celsius and $-35$ ?degrees Celsius. The process of refrigeration that keeps the temperature has a standard deviation $($ SD $)$ ?of $2$ ?degrees Celsius. And the mean value of this temperature is $-25$ ?degrees Celsius. Using these inputs which of the following is TRUE regarding the process capability for this process?

Question $39$ ?options:

Only X bar and R charts can determine process capabilities.

The process is center but shows significant dispersion

The process is off centered but appears to be consistent

The process is both center and consistent