A project of seven activities is defined as follows: Activity Immediate Predecessors Time (in wk) A E 9 F E A W G NUT n A G F. D K C, G O Based on the detailed project schedules, which of the following statements is correct? O Activity A is a critical activity. O Activity D and F cannot be finished on a different week. O Activity C has the largest slack time. Activity C can be started on week 10 without delaying the project