Question: Data structures & algorithm A:)Why does Breadth First Search algorithm use Queue for traversal? B:) Why do we need to mark the node as visited

Data structures & algorithm

A:)Why does Breadth First Search algorithm use Queue for traversal?

B:) Why do we need to mark the node as visited during graph traversal?

C:) Depth first search has recursive revision of traversal available and there is no simple recursive version BFS,why?

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