Given the following directed acyclic graph G (a) Perform a Breadth-First Search (BFS) on the given graph, using vertex A as the source. Then, draw the breadth-first tree obtained. (b) Perform a topological sort on the given graph, using a Depth-First Search (DFS) starting from vertex A. (i) Show for each vertex v, its discovery time d[v] and finish time f[v] in the DFS. (ii) Show the ordering of vertices obtained by the topological sort.

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