All duration estimates are in days, and the network proceeds from Node 1 to Node 9. A. Draw an AOA network diagram representing the project. Put the node numbers in circles and draw arrows from node to node, labeling each arrow with the activity letter and estimated duration. Add a tenth node with one day with your last name. Identify all the paths on the network diagram and note how long they are. What is the critical path for this project, and how long is it? What is the shortest possible time it will take to complete this project?