Simple undirected grapg

Q9. Vector STL#9
Which of the following can be used to store a simple undirected graph with N nodes?

Does the simple graph not have weight??

Hello @ashutoshkabra3293 you can use adjacency list and matrix to store.

Hi Tushar I was asking pertaining to quiz

@ashutoshkabra3293 then the answer must be
All of Them