Graph Algorithm 6

3Let G be a simple undirected graph. Let T_D be a depth first search tree of G. Let T_B be a breadth first search tree of G. Consider the following statements:
I. No edge of G is a cross edge with respect to T_D. (A cross edge in G is between two nodes neither of which is an ancestor of the other in T_D).
II. For every edge (u, v) of G, if u is at depth i and u is at depth j in TB, then |i – j | = 1.
Which of the statements above must necessarily be true?

Option : A
Explanation :
Statement (i) is true.
(i) No edges of G is a cross edge with respect to T_D.

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