Which of the following statements concerning control chart limits is true?

A$.$

the smaller the value of z$,$ the more narrow the control limits are and the more sensitive the chart is to changes in the production process

B$.$

the smaller the value of z$,$ the wider the control limits are and the less sensitive the chart is to changes in the production process

C$.$

the larger the value of z$,$ the more narrow the control limits are and the more sensitive the chart is to changes in the production process

D$.$

the larger the value of z$,$ the more narrow the control limits are and the less sensitive the chart is to changes in the production process