Consider the directed acyclic graph (DAG) below :
![acyclic graph]()
Which of the following is/are valid vertex orderings that can be obtained from a topological sort of the DAG ?
Which of the following is/are valid vertex orderings that can be obtained from a topological sort of the DAG ?
- P Q R S T U V
- P R Q V S U T
- P Q R S V U T
- P R Q S V T U
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