A control chart has all of the following c
题型：单项选择题
问题：
A control chart has all of the following characteristics EXCEPT: （）.
A．It illustrates how a process behaves over time.
B．It is used to determine whether or not a process is stable or has predictable performance.
C．It illustrates how various factors might be linked to potential problems or effects.
D．It can be used to monitor any type of output variable.