Sample size

is $9,$ average of the sample ranges

is $4.$ Calculate the

and

of the range chart for this process.

n A$2$ D$3$ D$4$

$21\mathrm{.}8800\mathrm{.}0003\mathrm{.}267$

$31\mathrm{.}0230\mathrm{.}0002\mathrm{.}575$

$40\mathrm{.}7290\mathrm{.}0002\mathrm{.}282$

$50\mathrm{.}5770\mathrm{.}0002\mathrm{.}114$

$60\mathrm{.}4830\mathrm{.}0002\mathrm{.}004$

$70\mathrm{.}4190\mathrm{.}0761\mathrm{.}924$

$80\mathrm{.}3730\mathrm{.}1361\mathrm{.}864$

$90\mathrm{.}3370\mathrm{.}1841\mathrm{.}816$

$100\mathrm{.}3080\mathrm{.}2231\mathrm{.}777$

Group of answer choices

UCL$=7\mathrm{.}26,$ LCL$=0\mathrm{.}74$

UCL$=0\mathrm{.}74,$ LCL$=7\mathrm{.}26$

Cannot be calculated

UCL $=2\mathrm{.}18,$ LCL $=3\mathrm{.}82$

UCL $=3\mathrm{.}82,$ LCL $=2\mathrm{.}18$