The Distribution of Certain Test Scores Is a Nonstandard Normal $z = ( x - \mu ) / \sigma$

Multiple Choice

The distribution of certain test scores is a nonstandard normal distribution with a mean of 50 and a standard deviation of 6. What are the values of the mean and standard deviation after all test scores have been
Standardized by converting them to z-scores using $z = ( x - \mu ) / \sigma$ ?

A) The mean is 10 and the standard deviation is 100.
B) The mean is 0 and the standard deviation is 1.
C) The mean is 100 and the standard deviation is 10.
D) The mean is 1 and the standard deviation is 0.