Provide short answers to the following questions:
In the graph shown above, the depth-first spanning tree edges are marked with a 'T'. Identify the forward, backward and cross edges.
For the given question,
These are marked in the below graph. Below each node, its discovery time is marked. An edge $(u,v)$ becomes a forward edge only if $d(u) < d(v).$
The tests are there but it ain't free. Cost is...