The upper and lower specification limits for a component are 4.02 and 3.98 inches, respectively. The process standard deviation is .004, and the process average is 4.005 inches. Is this process capable of achieving four-sigma performance (the four-sigma performance target value is 1.33)? A) CPk 1.25, CP 1.67, Four sigma performance can be met with regards to variability but work must be done on the process to improve centering in order to achieve four sigma process performance. B) CPk is 1.5 and CP is 1.75; four sigma can be met for variability and centering