Q:Question:4. Topological Sorting You will perform two topological sorts on the directed graph to When the processing of a vertex creates more than one new p. new pending vertices to your set of pending vertices in alphabe push(X), push(Y), push(Z)).For each topological sort, use the provided tables to compute t your final solution. Show your work to allow partial credit (e.g., removing from the set). (a) Perform a topological sort using a queue to