An articulation point in a connected graph is a vertex such that removing the vertex and its incident edges disconnects the graph into two or more connected components.Let T be a DFS tree obtained by doing DFS in a connected undirected graph G. Which of the following option is/are correct?

Root of T can never be an articulation point in G.

If u is an articulation point in G such that x is an ancestor of u in T and y is a descendent of u in T, then all paths from x to y in G must pass through u.

Root of T is an articulation point in G if and only if it has 2 or more children.

A leaf of T can be an articulation point in G.

An articulation point in a connected graph is a vertex such that remov

1.	An articulation point in a connected graph is a vertex such that removing the vertex and its incident edges disconnects the graph into two or more connected components.Let T be a DFS tree obtained by doing DFS in a connected undirected graph G. Which of the following option is/are correct?
A.	If u is an articulation point in G such that x is an ancestor of u in T and y is a descendent of u in T, then all paths from x to y in G must pass through u.
B.	Root of T is an articulation point in G if and only if it has 2 or more children.
C.	Root of T can never be an articulation point in G.
D.	A leaf of T can be an articulation point in G.
Answer» C. Root of T can never be an articulation point in G.

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An articulation point in a connected graph is a vertex such that removing the vertex and its incident edges disconnects the graph into two or more connected components.Let T be a DFS tree obtained by doing DFS in a connected undirected graph G. Which of the following option is/are correct?

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