In a large set data that are approximately normally distributed,  $\textasciitilde$  r is the value in the data set that has a z-score of -1.00,  $\textasciitilde$  s is the value of the first quartile, and  $\textasciitilde$  t is the value of the 20th percentile.  $\textasciitilde$  Which of the following is the correct order from least to greatest for the values of r, s, and t? 
选项为:A:r, s, t  B:r, t, s  C:s, t, r  D:t, r, s  E:t, s, r  请回答其中一个选项.