The critical activities are What is the EF for Activity C? What is the LF for Activity E? What is the slack for the start of Activity C? What is the slack for the start of Activity E? What is the slack for the end of Activity E? What is the length of the project? time periods.From the following information, compute the early, late, and slack times for each activity. Identify the critical activities. ID Task Duration Predecessor Additional Lag Relationships Lag A Design B Order Parts A Start-start A to B 4 C Code Software D Assemble Finish-start B to D E Debug Start-start C to E Finish-finish C to E F Install 4 E, D C Lag 1 7 E A Lag 3 9 B D F Lag 5 4 Lag 4