The following program attempts to use DFS to determine a pat…

The following program attempts to use DFS to determine a path from node “start” to node “goal”. For the given tree, represented by the adjacency matrix, there is a path from node 0 to node 4 (0 -> 2 -> 4). The code compiles, but the output is instead “No path found from 0 to 4.” What line contains the code causing the error?