The upper and lower control limits for a component are $0\mathrm{.}150cm.$ and $0\mathrm{.}120cm.,$ with a process target of $\mathrm{.}135cm.$ The process standard deviation is $0\mathrm{.}004cm.$ and the process average is $0\mathrm{.}138cm.$ What is the process capability index?

Select one:

A$.1\mathrm{.}25$

B$.1\mathrm{.}00$

C$.1\mathrm{.}75$

D$.1\mathrm{.}50$