Q. 39 Consider an undirected unweighted graph G. Let a breadth-first traversal of G be done starting from a node r. Let d(r,u) and d(r,v) be the lengths of the shortest paths from r to u and v respectively in G. If u is visited before v during the breadth-first traversal, which of the following statements is correct?
(A) d(r, u) < d(r, v)
(B) d(r,u) > d(r,v)
(C) d(r,u) <= (r,v)
(D) None of the above
Answer: (C)
Explanation:
