3) (15 pts) Consider a project with seven tasks described in the table below. Assume that the project begins at time 0. Task Normal Duration (days) Immediate Predessor Start Start A,B a) Using the information in the above table, construct a spreadsheet showing early and late starting and finish times for all tasks as well as total slack. If you used total slack to prioritize tasks, which task(s) would have the lowest priority? b) You have discovered that task C cannot be started until a certain machine is delivered; the subcontractor on this project has promised that this machine would be delivered at the beginning of day 12 (task C can be started anytime after the machine has been delivered). Using the information in the above table, does this additional information imply that the project will be delayed beyond its completion time in part a? Does this information cause you to change your estimate of which task(s) have the lowest priority (based on total slack)