A key joint in a precision machining process has a lower specification limit of a width of $0\mathrm{.}98$mm and an upper specification limit of $1\mathrm{.}01$mm$.$ The standard deviation is $0\mathrm{.}001$mm and the mean is $1$mm$.$ What is the process capability index for the precision machining process? Is the process capable of meeting requirements? $0\mathrm{.}50$ : Yes $5$; No $5$: Yes $0\mathrm{.}50$; No