standard deviation of $0\mathrm{.}65$ pounds.

a$.$ What should be used to assess capability?

A$.$ The Six Sigma quality, because the process is well controlled.

B$.$ The process capability ratio, because the process mean is not centered on the target.

C$.$ The process capability index, because the process mean is not centered on the target.

D$.$ The process capability ratio, because the process mean is centered on the target.

E$.$ The process capability index, because the process mean is centered on the target.

The process capability index for $BHC$ is

$.($Enter your response rounded to three decimal places.$)$