The upper and lower limits for diving ring diameters made by$$John$\text{'}$s Swimming Co$.$ are $40$ and $39$cm$.,$ respectively. John took $11$ samples with the following average diameters$(39,39\mathrm{.}1,39\mathrm{.}2,39\mathrm{.}3,39\mathrm{.}4,39\mathrm{.}539\mathrm{.}6,39\mathrm{.}7,39\mathrm{.}8,39\mathrm{.}9,40).$ Is the process in$$control$?$

Part $2$

A$.$

$$Yes$,$ no diameters exceeded the control limits$.$

B$.$

$$No$,$ the range is not in control.

C$.$

$$No$,$ some diameters exceeded the control limits$.$

D$.$

$$No$,$ there is a distinguishable pattern to the samples.

E$.$

There is not enough information to make a decision.