Suppose that you are conducting a survey of adults and recording the number of books each individual read in the past year. The mean number of books is 12, and the standard deviation is 4. Allen reads exclusively nonfiction books, and he read 20 in the past year.

Which of the following statements is true?

Select the correct answer below:

Allen's number of books is 8 standard deviations to the right of the mean.

Allen's number of books is 8 standard deviations to the left of the mean.

Allen's number of books is 2 standard deviations to the right of the mean.

Allen's number of books is 2 standard deviations to the left of the mean.