All vertices of even degree Use Graphs \(A, B, C, D, E, F, G, H\), and \(I\) to answer the following exercises. Identify any graph or graphs with the given characteristics or indicate that none do.

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b h g Graph A W Graph D a k P Graph B b h P k e C Graph E (m) d Graph G n Graph H Multigraph C t Graph F Multigraph I u