The mean of a set of credit scores is u=690 and o=14. Which statement must be true?
A. Z690 is within 1 standard deviation of the mean.
B. Z690 is between 1 and 2 standard deviations of the mean.
C. Z690 is between 2 and 3 standard deviations of the mean.
D. Z690 is more than 3 standard deviations of the mean.
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