For the Interval Estimation Of $\mu$ When $\sigma$ Is Assumed Known, the Proper Distribution to Use Is the Known

Multiple Choice

For the interval estimation of $\mu$ when $\sigma$ is assumed known, the proper distribution to use is the

A) standard normal distribution
B) t distribution with n degrees of freedom
C) t distribution with n - 1 degrees of freedom
D) t distribution with n - 2 degrees of freedom