Given the project within the table below, calculate the following: Activity Duration (hours) Immediate Predecessors | 4 | 3 8 AB D 7 E 2 B, C F 3 DE G 7 a. What is the project length? (Select] b. What activities are on the critical path? (Select ] How much slack in in activity B? [Select ] d. What is the Late Start / Late Finish for activity D? [Select ] f. What if activity D was delayed by 8 hours (now taking 15 hours), what impact would it have on the overall project? (Select]