Graph \(A\), vertex \(c\).

Use the graphs in the initial exercise to answer the following exercises. For each exercise, a graph and a vertex on the graph are given. Find an Euler circuit beginning and ending at the given vertex if one exists. If no Euler circuits exist, explain how you know that they do not.

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