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Partial Question 4 5 / 10 pts Check all that apply. DFS(G) 1 for each vertex u E G.V u.color = WHITE 3 U = NIL 4 time = 0 5 for each vertex u E G.V 6 if u.color == WHITE DFS-VISIT( GU) DFS-VISIT(G,u) 1 time = time + 1 2 u.d = time 3 u.color = GRAY 4 for each v E G. Adj[u] 5 if v.color == WHITE 6 V.J = U 7 DFS-VISIT(G, v) 8 u.color = BLACK 9 time = time + 1 10 u.f = time These operations take O(IV) time during the execution of DFS. Line 7 in DFS-VISIT(GU) Line 7 in DFS(G) For loop Lines 4-7 in DFS-VISIT Lines 1-3 in DFS-VISIT Lines 1-3 in DFS