Consider a machined part for which the upper specification limit $=100mm,$ lower specification limit $=99\mathrm{.}5mm,$ the process mean $(x-$bar$)$ is $99\mathrm{.}8mm,$ and the process standard deviation $($sigma$)$ is $0\mathrm{.}08.$ Then

A$.Cpk=6^{**}$ sigma

B$.Cpk=1\mathrm{.}04$ and the process is capable by this measure

C$.Cpk=1\mathrm{.}04$ and the process is not capable by this measure

D$.Cpk=0\mathrm{.}83$ and the process is not capable by this measure

E$.Cpk=0\mathrm{.}83$ and the process is capable by this measure