Question $25(2$ points$)$ Saved Listen What is the purpose of statistical process control SPC$?$ A $)$ To keep quality records to show to customers. B $)$ To monitor the process close enough that we know about quality problems before they happen. C To monitor the process in order to know when the average number of defects is too high. D $)$ To monitor the process close enough that we know when the process has gone out $-$of$-$ control $.$