Question $3$

Take the same graph and adjacency list as in the previous question. Which of the following are back edges encountered during a depth$-$first search starting at vertex $0?$ You may choose more than one answer.Question $3$

Take the same graph and adjacency list as in the previous question. Which of the following are back edges

encountered during a depth$-$first search starting at vertex $0?$ You may choose more than one answer.

The edge $(1,0).$

The edge $(4,2).$

The edge $(2,1).$

The edge $(3,4).$