You are managing a product upgrade project for Bangkokagogo. Given the project network that follows, complete the forward and backward pass, compute activity slack, and identify the critical path. Use this information to create a Gantt chart for the project. Be sure to show slack for noncritical activities. Legend ES ID EF SLK LS DUR LF B E G 4 4 A D F H 3 2 1 2 C What are the critical activities? What is the slack for B? What is the slack for C? What is the slack for E? What is the slack for F? What is the slack for G? What is the slack for H? What is the slack for I? What is the length of the project? time periods