A laser eye surgery process has tolerances of plus or minus $\mathrm{.}001$ inches. What does the process standard deviation need to be in order for this process to have a capability ratio of $1\mathrm{.}33?$

$0\mathrm{.}025$ inches

$0\mathrm{.}0015$ inches

$0\mathrm{.}015$ inches

$0\mathrm{.}00025$ inches