Sampling.xlsx darr file includes the sampling records of a roller production line. Samples were taken from each of the five workstations $($A$,$ B$,$ C$,$ D$,$ and E$),$ every two hours during the $50$ days of sampling. The production method also changed after $24$ days. The former production method is called method $"a"$ and the new method, $"$b$".$ The company is interested in controlling the quality of rollers in terms of torque resistance, so torque resistance of the rollers is measured as "pounds$-$feet" and recorded in column $"$TR$".$

Which workstation has a more consistent production outcome $($less variability of torque resistance$)?$

E

D

A

C

B