AMC 10B 2008 Problem 20

The faces of a cubical die are marked with the numbers 1,2,2,3,3, and 4 . The faces of a second cubical die are marked with the numbers 1,3,4,5,6, and 8. Both dice are thrown. What is the probability that the sum of the two top numbers will be 5,7 , or 9 ?

Answer Choices
A. \dfrac{5}{18}
B. \dfrac{7}{18}
C. \dfrac{11}{18}
D. \dfrac{3}{4}
E. \dfrac{8}{9}