AMC8 1997 Problem 9

Past Contests AMC8 AMC 8 - 1997
1

Three students, with different names, line up single file. What is the probability that they are in alphabetical order from front-to-back?

Answer Choices
A. \dfrac{1}{12}
B. \dfrac{1}{9}
C. \dfrac{1}{6}
D. \dfrac{1}{3}
E. \dfrac{2}{3}