If the process mean were to drift from its setting of $2\mathrm{.}500$ mm to a new mean of $2\mathrm{.}497.$ What is the Cpk for this process?

A$)2\mathrm{.}444$

B$)1\mathrm{.}833$

C$)0\mathrm{.}417$

D$)2\mathrm{.}25$

E$)3\mathrm{.}0$