![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
Japanese quality control has improved dramatically in the last 30 years for all of the following reasons except:
A.
. the use of quality circles.
B.
. small, continuous improvements in quality control.
C.
. the use of worker suggestion systems.
D.
. the use of quality control charts.
E.
. focusing quality control efforts on production outputs.