The estimated times and immediate predecessors for the activities in a project at General Foods breakfast cereal capacity expansion are given in the following table. Assume that the activity times are independent. 1. What is the expected completion time of the critical path? 2. How much slack is there in activity D.? weeks. weeks 3. What is the Late Start Late Finish for activity B.? 4. How much slack is there in activity B.? 5. What if activity D. was delayed by 3 weeks, what would be the project length and critical path? Hint: Change the original duration of 4 weeks associated with Activity D, with 7 weeks. Then repeat the forward \& backward passes