The upper and lower customer specified limits for a component are $6\mathrm{.}40$ and $5\mathrm{.}20$ inches respectively. The process standard deviation is $0\mathrm{.}15,$ and the process average is $5\mathrm{.}70$ inches. The Process Capability Index $($Cpk$)$ rounded to two spaces after the decimal is:

$1\mathrm{.}11$

$1\mathrm{.}56$

$6\mathrm{.}27$

$1\mathrm{.}33$