30. Consider the following directed graph.
Which of the following is a topological sort of the nodes of the graph?
(A) 5, 7, 10, 13, 14, 17, 20, 30
(B) 10, 5, 13, 14, 7, 30, 17, 20
(C) 10, 5, 13, 17, 20, 14, 7, 30
(D) 10, 5, 20, 13, 17, 30, 14, 7
(E) 10, 20, 5, 17, 13, 14, 7, 30
