Graph (B, v ightarrow w ightarrow x ightarrow r ightarrow u ightarrow z ightarrow y ightarrow s

Graph \(B, v \rightarrow w \rightarrow x \rightarrow r \rightarrow u \rightarrow z \rightarrow y \rightarrow s \rightarrow t \rightarrow u\)

Use the figure to answer the following exercises. In each exercise, a graph and a sequence of vertices are given. Determine whether each sequence of vertices is an Euler trail, an Euler circuit, or neither for the graph. If it is neither, explain why.

u Graph A X Graph B W W Graph C Graph D y W