If $\stackrel{}{x}=23$ ounces, $=0\mathrm{.}4$ ounces, and $n=16,$ what will be the $+-3$ control limits for the $x-$bar chart?

Select one:

a$.22\mathrm{.}70$ to $23\mathrm{.}30$ ounces

b$.22\mathrm{.}90$ to $23\mathrm{.}10$ ounces

c$.22\mathrm{.}25$ to $23\mathrm{.}75$ ounces

d$.23$ ounces

e$.21\mathrm{.}8$ to $24\mathrm{.}2$ ounces