Consider each sequence of vertices from Graph \(A\) in Figure 12.79. Determine if it is only a walk, both a walk and a path, both a walk and a trail, all three, or none of these.

1. \(b \rightarrow c \rightarrow d \rightarrow e \rightarrow f\)

2. \(c \rightarrow b \rightarrow d \rightarrow b \rightarrow e\)

3. \(c \rightarrow f \rightarrow e \rightarrow d \rightarrow b \rightarrow c\)

4. \(b \rightarrow e \rightarrow f \rightarrow c \rightarrow b \rightarrow d\)